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Squeenix announced the FF13 trilogy for PC a few days ago. There is already a Steam page for the first one and it's only like $13 as well. Comes out in a few weeks.
How about something like this? http://www.ergogeek.com/xarmor-u9w-2.4-ghz-rf-wireless-mechanical-keyboard.html
It's a MX Brown based wireless keyboard, looks good to me! At $89 it doesn't look too shabby.
As for your mouse options, why not just consider a standard wireless gaming mouse like...
Hmm, traditionally DVI and its variants do not carry audio, but I do not doubt you and I bet that ASUS has rigged some kind of proprietary DVI to HDMI with audio by the looks of that yellow adapter. If it makes sound, so be it! However, if you went with a normal off-the-shelf DVI to HDMI cable...
I just read that you're using a DVI to HDMI cable from the video card to the receiver. While the video portion of a DVI/HDMI cable are the same, DVI does not carry audio.
You could hit up monoprice.com for mega-cheap good quality HDMI cables that should give you the audio output you're looking...
That Onkyo is a great receiver, the last Onkyo I owned was the Onkyo 605 and it served me well.
As far as your audio output choices, you have a few options. My setup choice would be to ignore the Maximus onboard audio and use the sound provided by your video card through HDMI.
Windows 8...
You're better off hitting up the XDA forums for the GS2 phones
I took the libery of gathering the links to get you started:
AT&T branded GS2 help/Q&A
Galaxy S2 i9100 help/Q&A
Good looking build overall. The things I would change:
Mobo: Stay with Asus but skip the Sabertooth. I have the P67 Sabertooth and it's just not worth the extra dough.
Case: Take a look at the Corsair Carbide 300R. Looks great, matches your other Corsair products, and should be a sure fit...
http://hothardware.com/printarticle.aspx?articleid=1280
Slightly dated, but the graphs give you a general idea of the diminishing returns on speeds beyond 1600mhz (even 1333) and tight timings.