New 2133 memo

[Alushadow]

hello
i recently had a bit of faulty with my old G.skill memory
but since i upgraded my system recently (not the memo)
i figured i can get a better memo then i used to have
i run an Asus Maximus IV Rampage
with sandy bridge CPU 6 cores 3930k
now i have been checking which memory would be best between the following ones

The Kingston hyper x
The Corsair Vengeance
The G.skill ripjaw
The G.skill Ripjaw Z
And the G.skill Sniper

i also want to know
is there any difference between a 16GB kit and a X2 8GB kits?
or it is the same?

thanks to anyone who answer

 

[amuffin]

16gb can be the following:
4 sticks of 4gb
2 sticks of 8gb
8 sticks of 2gb

There's no point of anything above 1600mhz, so 2133mhz is a bit of a waste.

 

[Alushadow]

you sure there is no difference at all?
i don't mined spending about 120$ for a 16GB 2133
if it does hold a difference
since i change the memo once in few years
i say if you go buy it then BUY it

 

[Alushadow]

can anyone at least tell me which of the brands i asked
is better?