http://themacelite.wikidot.com/
Good place to check out, small site, and the forums are down, which sucks, but it's got a mini-buying guide on the wiki, which is very useful.
If I were you, I'd grab a 6200 AGP, and flash it, if you manage to get the PV-T44A-WANG or PV-T44D-WANG, then you'll have the correct flash ROMs on the site already. I thought I was screwed, I ordered a 6200 AGP, hoping I was getting a T44A, but got a T44D, since I hadn't heard about it anywhere on the internet, I risked it, and did a flash, it works just fine.
It's in my Sawtooth. An underpowered card, but it's not bottlenecking anything, since the rest of the system is a bottleneck (2x AGP, dual 450MHz G4, and only 512MB SD RAM), and really gave a big boost to OS X Tiger.