My first graphics were integrated SiS on a Venus mobo. I had 48MB total in that system with a Cyrix 300MHz (233PR), with 4 dedicated to video. Then I got an ATI Xpert 98, I noticed a major difference when I got that baby. After that Voodoo 3 3000 AGP Retail, V4 4500, GF2 MX, GF2 Ti, Radeon 8500. The last two being my most current, as per specs in the sig line.:D
Currently, I have the Radeon 8500 (really? do tell), and it kicks much A$$! ATI has a few minor details to smooth out (refresh rate) with it, but as far as I'm concerned, there's really no reason to buy the GF3Ti500. The 8500 is cheaper on the same grounds (OEM, on-line, retail, etc.) and does the same in terms of speed as the Ti500.
Also, if you so doubt me, check through my posts in the past: I've hated ATI. That right there oughtta tell you how much ATI has come around.