Gp4 is a great game, a true simulation of every single aspect of a Formula one race. BUT i still prefer Gp3.
First of all, When you install Gp3, come to that beautiful intro, the music, images... the game itself took 4 years to be developed (most of the time of the production was on reseasrching, used later in gp4 too), it has video from real life, theme music from Rob D, consistency (something Gp4 doesn't have). Also, when you are in a season at Gp3, you feel like in an incredible journey thru the world. In Spa, for example, you start in the middle of everything, and after some seconds, you are in the middle of nothing! Also, the 1998 season was cool, but JV is not there. You feel like they wanted to make that game, they dedicated!
When you install Gp4, the first think i've noticed is that it uses the same background as Gp3(lazy guys). Tha game itself was to be about the 2000 season, you can see it clearly. But then they wanted 2001, and the game became a mix, even the yoong's helmet is wrong. The game is buggy.
It's my opinion: Gp3, the best f1 game ever!
BTW, what's refresh rate?