Hi all, I am going to upgrade my PC. Presently using XP1800+ with Epox 8RDA+. Looking at S939 but cannot decide which mobo.... got Asus, Abit, MSI.....n so on. Also heard of the up n coming Nf4 n ATI chipset... So, please give me more infomation about the 'pros n cons' so I could decide... Thks.