Need some input

[Indyboy2]

I just put together a second rig just for a spare,i would like to know what would be the better setup 2 x1800gto cards in a crossfire set up which i have now or a 7900gt single card.I am having a time with the ati drivers they will not load at boot using vista in crossfire mode.I have to reinstall the drivers every time or keep the crossfire box unchecked in ccc.