Btw, what do you think about getting immediately 8GB of memory, so I don't have to upgrade later? I just checked, and saw that a GeIL memory kit of 4GB only costs 105€, which is quite cheaper than the G.SKILL I wanted to get. So instead of getting 4GB for 170€, I would get 8GB for 210€.
I lately only used GeIL memory, which I found to be very good and reliable. I can give you the latencies if you want to compare them:
GeIL: CL7 7-7-24 (model GV34GB1333C7DC)
G.SKILL: CL8 8-8-21 (model F3-10600CL8D-4GBHK)
And as I noticed just now, from today on, the G.SKILL memory is out of stock
The GeIL memory is also supported by the mainboard.
EDIT: With some further investigation I read that some people have problems with the GeIL memory. I found now memory from Patriot, which seems to be top, but it's quite expensive, 140€ for 4GB. But I also saw that there's Kingston Hyper X memory, and "only" 219€ for a quad kit (8GB), but it's not on the qualified vendors list of Asus.