Best video card for legacy Mac

I would like to know which is the best video card ever made for legacy
Mac?

The Radeon 9200 PCI or the Radeon 7000 PCI, or something else?

In the connection area (somebody call it teeth, somebody call it
legs), there are two notches, but the PCI cards that I have only have
one notch.  Are these two Radeon PCI cards compatible with the old
legacy mac? (for now, don't worry about OS)

Thanks!
Pat