I just saw a couple of reviews of the current GS. Looks like they lost that sportiness...
Yes, the newer one is a great car, but I prefer the previous version 98+. It was a bit of an oddity for Lexus, I remember a lot of reviews were shocked they produced such uncharacteristically sporty car. The newer ones are more in line with their luxo first, sport second philosophy. I feel they did the same thing with the IS. The new ones are very good, but not as edgy.