I've been playing WC3 often lately on a GF3, and I've noticed no noticeable improvements with aniso for WC3. As a result I don't play with it for speed purposes. Then again, a majority of games I play also don't have aniso turned on either. Performance hit just isn't worth it for me, however I do have 4xAA turned on. My gaming situation dictates that I prefer AA on, aniso off, for a blend of quality and speed. I run on a 22" and speed wise, its best for me to run games at 1024x768. Of course at that low of a resolution AA makes a world of difference as compared to aniso.