7850 1gb or 7850 2gb?

Hi, I pretty much decided I want to go for the 7850 because I'm only running 1 monitor at 1080p that is 60hz. Meaning I don't need anything above 60fps and the 7850 seems perfect based on benchmarks I've seen. Problem is I'm not sure if i should go with the 1gb version or the 2gb version. Some people say there's no real point in the 2gb unless your using like a 7870 or better and higher than 1080p. Others say that some games like Skyrim that have a texture pack can benefit from the 2gb even at 1080p. So do I get the 7850 1gb or 2gb? (price difference is about 40-60 dollars). Also I'm not sure If i should go for the

Saphire http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5273329&CatId=7387

Or the

XfX Core Ed.

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5400618&CatId=7387


Thank you,