I have a G2 Pro. I also get the impression that I should stand up and upgrade, but when I think about why I would need to upgrade I sit right back down. I don't plan on upgrading this card until I can't play a game at 1280x1024x32 (RTCW, UT, C&C, Q3, etc.) anymore. So, even if the price of the cards are $100 today, tomorrow when that game that you want to play comes out (Warcraft 3, Doom, UT2, etc.) it definitly will be less.
Also, other system hardware would play a part in this question for anyone.
Happy Gaming...
-JC