I see "Base' all the time to describe an RX350. Are there any other levels? I'm more familiar with Toyota labels like SR5, XLE, Limited and all that.

Wife recently purchased the below. What would be the proper term and comparison to "Base"?

 

They are all base. Then either AWD or FWD. The F-Sport models did not appear until after 2012.
Then there are different trim packages such as Premium which you have. Most were sold with the Premium package.

​​​​​​The 2010 Lexus RX 350 did not come with traditional "trim packages" in the same way newer models do; instead, it was offered in a base configuration with a wide array of optional packages and standalone features that could be added for enhanced luxury, convenience, and technology. Key packages included the Premium Package, Comfort Package, Luxury Package, and Sport Package, along with various standalone options like the Navigation System, Mark Levinson Audio, and Rear Seat Entertainment System

​​​​​​Premium Package:
Typically included features like a power moonroof, leather-trimmed seating, and upgraded audio.
Comfort Package:
Offered amenities like heated & ventilated front seats and a wood & leather-wrapped steering wheel and shift ****.
Luxury Package:
Elevated the experience with more premium features, potentially including semi-aniline leather and other high-end finishes.
Sport Package:
Provided a sport-tuned suspension and 19-inch alloy wheels for a firmer ride and enhanced handling.
Navigation System:
Featured a hard-drive-based system with the Remote Touch interface and a backup monitor.
Mark Levinson Audio:
Offered a premium 12-speaker or 15-speaker sound system for enhanced audio quality.
Rear Seat Entertainment System:
Included dual screens for rear passengers.

​​​​​​Other notable options available included the Heads-Up Display, Intuitive Parking Assist, Bi-Xenon High Intensity Discharge (HID) Headlamps, and a Towing Prep Package. While the 2010 RX 350 had an AWD option, the core features and amenities were largely determined by the selected packages and individual options.

 

Essentially the included options listed on the upper right corner of the window sticker are in addition to the "base" designation. Not really a big deal since most of these vehicles came with various options and packages. Gotta drive up that MSRP somehow.

 

Wish i had Bixenon HId headlights. But I do have towing package.
I didnt have much of a choice. my main intention was to get something:
1 Owner
Good service history
MADE IN JAPAN
FWD

and this popped up and im happy

 

Right. Unless ya know exactly how the vehicle is equipped it's not so easy to compare prices of used RX350s. Heck, the premium and comfort packages along with Nav on the wife's RX increased MSRP when new as much as we paid for the entire vehicle used.

 

Here is a link to the various years Sales Brochures which go into the different options:

Auto-Brochures | Lexus Car & Truck PDF Sales Brochure/Catalog/Flyer/Info CT ES GS GX HS IS LC LFA LS LX NX RC RX SC UX

 

Thank you. The wife will love it.