I am in the process of building a new rig and the only piece I don't have now is a video card. Been waiting a week for the 5850 but starting to think if it is worth $300 since I only game at max 1920x1200. Would picking up one of the current cheaper ATI or nVidia options be the best move?

I am starting to lean towards a 275 with a cheap physx card or a 4890. What do you guys think?