[操作疑難] G.SKILL ram

想問G.SKILL RipjawsX Series定Sniper Series比較好?
同埋Sniper Series DDR3 1866 9-10-9-28 1.5V和RipjawsX Series DDR3 2400 11-13-13-31 1.65V
大家會買邊隻?
另外問G.SKILL 咁多系列邊個最好?