Sounds like you like the car a lot, and you don't know what you want. Your resale value curve is starting to get shallower, and it will flatten out to a degree. The car will still have value after 100k. Most important, you are in a car you like that is highly dependable. If you are tired of it, that's one thing, but I wouldn't let the 100k mile resale value push me to make a change. There are a lot of luxury cars that you don't want to own out of warranty, or at least need an extended warranty. I have known a few former LS430 owners who don't like their 460's.

 

I think resale takes a hit at 80k. This is a very safe car, depending on yur driving gets good MPG for a car this size with the 6 speed. Of course it is premo gas but most ultra luxury cars are.

 

Definitely going to keep this one. Saw a great deal on a new GX, but dealer only wanted to give me $12K for the car. Sure, to them it might only be worth 12K, but I can easily get a few extra years out of this LS