Overall really good build for the money. My only concern with the LGA1156 CPU is the compatibility with the more "performance level" CPU in the future, the 6 cores i9 for example will only work on LGA1366 (I don't know the plan for any LGA1156 equivalent). If you don't mind much (nothing wrong with that BTW) then no problem, you will enjoy your build I have no doubts; if you would prefer to keep i9 as a possible upgrade in the future, I would do the following alterations:
The bulk of the price difference is actually the CPU which is a shame because it's not really better than the i5 750 by itself. If you could find some kind of deal to bring the 170$ gap down, it would probably be worth it more.
About the 920, I'm not really to interested in that option. Mainly because of the too big price difference for no performance upgrade.
Hmm the motherboards. Could you tell me why I would have to spend more for the Gigabyte option?
And why the Asus for the same price? With less options ( from my newbie point of view ).
I have changed the memory to 1600 from the same brand and 8-8-8 timing. For just 5 CHF extra, thanks for the tip.
Please keep commenting, it keeps improving my system =).