If you want fantastic renderding times and crap like that, and an overall wonderful card, I'd shoot for the Canopus Bay.
http://www.canopus.us/US/products/dvstorm2_pro/pm_dvstorm_2_pro+.asp
My friend has it, and it's totally awesome.
http://www.canopus.us/US/products/dvstorm2_pro/pm_dvstorm_2_pro+.asp
My friend has it, and it's totally awesome.