What I've not yet made any real use of is the new ability on the 2013 to tag songs I'm listening to from XM or say HD Radio, where the vehicle will put that info onto my hardwired iPod, such that when I bring that iPod back in the house and connect it to iTunes I can see the list of tagged tunes and get to them in the ITunes Store for possible purchase. It works (tried it once for kicks), but with 700+ CDs on my iPod, I don't buy a lot of new individual tracks or albums these days..

Overall handling remains great. I have no complaints around town or on long trips.

My 19" Bridgestones are fine by me. I have played with PSI and am running closer to 40, vs the 33 I started with. It feels a whole lot better for my taste.

LED headlights are really pretty sweet. I still think they cost to much for what they are. Even though the spread of the low beams is more than acceptable, I still miss AFS and am sad Lexus took it away on the 2013s.

Parchment Interior and my Espresso Maple trim were great choices for me. I have no issues with keeping it clean even with my Golden Retriever who sheds like wild fire and rides in the back seat most of the time on a Canine Cover …but then again, I don't have kids riding in my truck, nor do I eat or drink in it either the vast majority of the time. The key I believe is to always do a wipe down of the seats with a damp cloth each time I wash the vehicle. I also have used Leather Masters Protectant as has been discussed over on the Detailing Forum, and it's proven to be nothing but excellent allowing me to easily remove darker blue jean transfer that occurs on the edges and seat bottom no matter how careful one is.

Seats are extremely comfortable for me as a 5'-11"+ sort of guy. Lumbar adjustments help a lot, but seat cushion extensions (part of one of the option pkgs) remain as useless as I originally thought they were.

Like so many others here in the US, I do miss the sunglasses holder and think about that fact twice each time I am in my truck when I have to get them out and put them back into the harder-to-reach center console.

I have found I never use Sport Mode. Given the truck always defaults this option off each time you start the vehicle, I just forget about it most of the time. I would probably keep the truck in Sport Mode if the setting could be permanent.

Unlike some, I have not yet had a single failure of the Nav and it's database to get me to where I wanted to go. While I don't like SiriusXM Customer Service at all, I have found NavTraffic to be useful with the Nav doing auto rerouting based on traffic jams. As a result, I plan to keep NavTraffic once the 1-year trial expires. NavTraffic is not always current (a 20 minute update?) and sometimes does not reflect reality, but overall, it's worked great for me, even on this last road trip from SoCal to Nevada and back. ...and for those participating in other threads, I don't keep a Garmin in my ride as backup -- I could always just pull over and use my iPhone with Google Maps, Apple Maps, or whatever, if I really got stuck. I'm not that concerned with Nav failures as some people seem to be.

NavWeather is a waste, just as I expected it would be. The Lexus interface does not utilize as much of this as I believe it could, and it's not as well integrated with the Nav as it could be to make it more useful. I won't pay for it once the trial is up.

I really hate the fact Lexus TOOK AWAY the automatic fade up/down of whatever music source may be playing when the Nav lady kicks in to say something. It's just ridiculous they didn't keep a good thing, like I had in my 199x Lexus vehicles.

Enform. Probably an area I was most excited about, but am most disappointed in. Implementation and packaging is disjointed across offerings (Apps, RES+, eDestination, etc); Apps may be geekie, but are not truly useful at least for me. While I have already signed-up for multiple years of the basic Enform (SOS, eDest, etc) service, I don't plan to pay the installation plus monthly fee for RES+, or the monthly charge to keep the onboard Apps enabled.
I have the more exclusive Pre-Collission System (PCS) that is primarily a safety system that hopefully I never use, but I have found that having the radar-assisted cruise control this option also provides is a real benefit that I use quite a bit -- not just on the open highway, but also on 45-55 MPH type of streets that I'm traveling for longer distances quite often. I've become comfortable and trusting of how this operates, and it's really great the vehicle will slow itself down if you get too close to a slower moving vehicle in your path. I wish it would fully brake the vehicle if it needed to -- like Lexus competitors do, but for what it is, I like it.

MPG. At 3300 miles, I'm past the initial break-in period, but as many have said, 5K is where the truck gets into more of a groove swing. I don't drive like a maniac, but then again, I have no intention of being a hyper-miler or some old grandpa slow-poke either. In other words, for the most part, I drive my hybrid like I would any vehicle, and I keep up with the front part of the pack, knowing that will take away from the possible MPG my RXh could likely deliver. 70 MPH is typical for me on freeways. I use only premium gas -- 91 octane is typical here in SoCal. I probably split my driving something like a 75% city / 25% highway, but it varies. I track my mileage at every fill-up using an iOS App called "Road Trip". My average MPG since purchase has been 26.2, with the worst MPG at any fill-up being a scant 22.8 and the best was more recently 30.3. Not as good as some, but for me, compared to the 30/28 estimated on the sticker and the way I prefer to drive my truck, I'm not complaining too much either. I didn't expect better MPG, but it's interesting that my overall MPG in my former RX400h was just about the same as what I'm getting in my RX450h, 7 years later. Lexus, you're not resting on your laurels, are you?

Fit and finish of the vehicle remains great. My major complaint remains with the "chrome" mouldings under the side windows that just are not designed or attached as well as my previous RX300 and RX400h were. I always have "drips" occurring from under those mouldings after my hand wash and dry session if I don't pull out the blower anticipating the problem each and every time.

My teaser for you is it seems MBZ takes a very different approach than Lexus with telematics packaging (for the better I believe), and Lexus as we know tends to mix-and-match technolgies or parts of them from model-to-model in their lineup -- making it really confusing for some of us (e.g. AFS being removed from 2013 RX, but still in some other models). MBZ on the other hand seems to pull technology more rapidly and consistently forward across models, and even upgrades the same gen of a particular model between MYs. My 2013 SLK will be the 2nd year of production in the 3rd gen of the convertible, but I find it very interesting that in the 2013's they added for no additional charge to their optional "Distronic Plus with Pre-Safe Brake" package (sorta like "PCS" in our Lexus world, except MBZ includes full brake stop capability), what we'd call BSM and Lane Keeping Assist. No additional charge over the 2012 -- wow! I think this demonstrates an interesting philiosophilcal difference between brands, and it makes me wonder to what degree MBZ brings enhancements to other things (like voice control?) along the way. More on all that later when I have a little practical experience with "the competition" and can get my act together a bit more.