which is the better computer;
http://www.compusa.com/applications/SearchTools/item-details.asp?EdpNo=4486280&CatId=114
or
http://www.compusa.com/applications/SearchTools/item-details.asp?EdpNo=4559646&CatId=114
or
http://www.compusa.com/applications/SearchTools/item-details.asp?EdpNo=4497959&CatId=114