I have a 4MB Stealth II S220 myself. Oddly enough the Rendition reference driver I have installed reports it as a V2200. I am not sure if it is because it has the latest/last v1.36 BIOS or something is different about the card. In any case, I *love* this card. It is the only card I own out of maybe a dozen PCI cards (S3's, 3D blaster, Savage4. and some others) that can handle some games odd frequencies and resolutions (like DOS Cannon Fodder) and the picture is so much better on it when using an LED display than any of my other cards for some reason.
Also, the claim of DOS FPS games running terrible is not true. Doom and Doom II run fine for me with this card. Admittedly they run smoother with other cards, but it is not bad at all and certainly not as bad as people make it out to be.
Yeah, the Rendition cards are really fantastic. Too bad they are so rare (except maybe the S220 that is). I recommend picking one up if you do not have one already. You will not be disappointed.