Dont need to drive an IS300h with AVS for 80k miles. Its evident within 2k miles where I live whether AVS makes much of a difference or not. In my opinion, its too small to notice and probably worse in the fact that it gives a harsher ride in Sport+ mode without any serious handling capability. Living in Yorkshire, you get the cobbled roads, super smooth roads and the potholed roads and never once did I say "ooh, you know what, the AVS is making my butt feel rather comfy".
Same with the one on the NX, its not much different and certainly not worth the extra cost. I havent played around with the new RX enough yet.
Hmm old Lexus demographic huh? Maybe on the basis that Ive driven Lexus for over 200k miles + whatever mileages I put on loaners and test vehicles but considering I cant manage to get over 35mpg in the IS300h, you can be rest assured that I dont drive like a pussy. Ive driven plenty of cars with AVS to know that the one in the IS and NX don't work anywhere to the same level as those in BMW or Audi.