I have a VTek 9800 Pro...excellent card. Had a VTek GeForce 3 Ti-500 previously, as well...also an excellent card. Both overclocked quite well, ran well without any issues...good warranty, too.
I read a couple reviews on the Visiontek X800pro including the one here at Hard OCP, and they both have said it OCs better than the BBA cards. As high as 95 core and 114 mem with stock cooling. Not to mention the lifetime deal, and its coming in at $399. I had a V-tek Gforce 3 ti200 and it was a great card infact its still going strong in my buddies pc. Its the one I'm getting as soon as I have the cash.