im making a new post so you dont think i changed my last one.
I think enthusia has some good things going for it, but me, having limited funds, wont purchase it in favor of GT4. My reasons are because of my personal taste, but also i can tell you a few things about enthusia i dont like (or like more in GT4).
Enthusias graphics look bad for me, they look like Ridge Racer (sort of). pretty flickery and theres not as much lighting going on. Also, i like the fact that GT4 has 700 cars and you can customize them all, i dont care about body kits, paint jobs etc, the only thing that counts on the track is speed. i saw both games in action through videos and i think that GT4 has a much more exhilerating feel to it, have you seen the video of the F1 car in Nurburgring? well thats basically why i like GT4 much more than enthusia.