No, i like the new GS a lot more than the old GS, but i'm not sure how i feel about the new IS. i DO like its 300hp v6 though, that thing tears your teeth out!
The new LS, they really gotta go back to smaller wheels/bigger tires. With with the 17 inchers and the low-pro's there's waaay more roadnoise and vibrations coming thorugh than a higher end luxury sedan should have, but that's just IMO