Have you not read Anand's article? For now, the GF3 offers no real advantages over the GF2 GTS. It will, however, usher in a whole new level of performance when games that support it's features start hitting the market. By then the prices will have dropped to a reasonable level.
For now pick up a GF2 Pro, & start saving for the GF3 & some games to properly use it.
Viper GTS