If you are looking to build an Aces High machine, I can tell you with 100% certainty to NOT get the GF3 Ti200. There is NO improvement between that card and the GF2 Ultra with regard to fps in AH. In fact, I got markedly higher fps with my GF2 Ultra in AH than I did with the GF3 Ti200 I tested (Visiotek).
Thats my $.02 (GF2 Ultra cards are $50-ish less expensive, and a wise way to save money)
Nim