Check out this gem!
You assume that everyone wants to spend top retail dollar every year for the so-called current calendar version Nav disc, and your implication that my post isn't helping those who need it is just plain wrong. If you think the 14.1 version is "out of date," your 15.1 version ($169 - $210 retail) is also out of date as soon as you bought it. The link I provided above to a genuine (not copyright stolen) Nav version 14.1 disc at $44.99 is a good value, and that's why others purchased it and expressed their appreciation. The 14.1 is a reasonable and viable choice to upgrade the Nav disc, especially for those of us who don't update the Nav disc every year. Most of the LS's on the road today have much older versions of the Nav disc installed, many have never been updated, so the 14.1 Nav disc version is a significant and inexpensive upgrade to the navigation and POI selections.
We agree the 15.1 version disc (calendar year 2016) was released very recently in late October. However, people could buy the 15.1 disc (at a much higher cost) and find no updates that have any effect whatsoever on their unique usage of the Nav system. That's the gamble you take (and that you advocate) buying the most recent released disc and paying top dollar for it, only to find that the new street that was completed in your neighborhood this past year isn't even shown on the "most up to date" Nav disc.
You advised above "you want 15.1" but didn't point out the significant difference in costs between 15.1 and 14.1. Do you have a source where members can obtain a genuine copy of the 15.1 version at a cost savings from the retail dealer price? Updating every year to the "newest" disc is costly, with very little or likely no benefit to the user - a total waste of money. Updating every 2 - 3 years with the current calendar year disc is a sensible and cost-effective option for many. It's an individual choice depending upon type of driving (local, cross country, etc.), exclusive reliance on the Nav system for roads, restaurants, and other POIs, etc. (especially when there are real-time alternatives with current traffic conditions).
I lived in an area where an extensive bypass was being constructed and lasted for a couple of years or more. I didn't necessarily like to see that I was driving through an area and not being on a road. However, I waited until the project was completed and listed as being incorporated on the new yearly DVD before buying it.
This allows each owner to determine and choose when they want to upgrade their DVD. I see nothing wrong with this.
I don't find it necessary for me to have a phone/nav system to distract me while driving. That is even becoming illegal in an adjacent city.

It's also my understanding that there will be no further updates for my car's NAV system, so the choice for me was between v13.1 and v14.1, as v15.1 supposedly isn't even an option for my vehicle UNLESS I update the DVD drive as well.
Lastly, I've found Waze to be less than impressive in my area, to the point that I don't use it anymore. This point, alone, sums up the opinions in this thread. Use what works best for you, but realize it may NOT be best for everyone.
To each their own.
Agreed.
Waze is only one - there are many, many more available like Google Maps or Inrix.
Celebrating Lexus & Toyota from Around the Globe
My travels take me to 4 states, primarily. North Carolina, Maryland, Iowa & Minnesota, with me being smack in the middle of the coverage areas of each disc. I was thinking the system either had the capability to load more than one disc, or to store the info from one disc while physically retaining the other, perhaps in some sort of memory chip. Apparently this isn't the case.
From the PDF you posted, I can see that all I'm really "losing" is the ability to search for POI's by name in the area not covered by the disc I choose to install. If I'm understanding that correctly, I'll still be able to SEE the POI's and select one, which is acceptable.
I've got a few options for offloading the other disc that I won't use, so no worries. In the event that I can't, I'm only out $20 bucks or so. I'll still have saved over $100 off the dealership price









..How hard is it to change the disc?..