Go with G.Skill. If you go to NewEgg and sort ALL the memory they offer by rating, there's a reason G.Skill sucks up the top few pages. It just works. I have four kits myself - one 2x8 in my laptop, two 2x4 in my desktop, and a set of 2x4 budget memory in an HTPC. All of it has worked without any problems.
I'm not all that familiar with PCPartPicker, but any of their 2x4GB kits of RipJaws X will work just fine; the only real differences past that are speed and timing... 1600Mhz CL9 is a pretty safe choice, but I'd be more than happy to flip through a few pages and find the best deal if you want.
I see NewEgg has a lot of G.Skill kits on sale, but a lot of them are selling out...
Isn't the Ares a more premium memory kit? I mean, if the OP plans on doing a good bit of Memory OCing, that would be fine, but the less expensive RipJaws work just as well for a bit less money. That is, as long as my memory serves me right... I'll double check that just to be sure.
I was wrong... it looks like they've really brought the price on their ARES series down quite a bit since I last looked into it.