[Sproket]

As far as Nvidia cards go the 64 megger's overclock much better b/c ram is faster on them. I have a Albatron TI4800se 128 meg and that thing o/c very well. 310/660+ but have it at 308/649 right now b/c its plenty fast. But it cost 175.
I tried the 9500 pro but mine was a piece of crap, took it back. had wavey lines in Bios. POst, and windows. Forget that.
I like Nvidia drivers better anyways.

Ti4200 128 megger's dont clock as high as the 64 ones.

My 2 cents

Edit:
Dont worry about AGP 8x either doesnt matter, 4x is just about the same speed. Only like a .005% increase, that not even a 1% difference.