I am not sure if you've decided anything yet, but i actually recently bought an origin chronos and it has performed amazing so far. Not only were they helpful in recommending the right parts for my budget of $1,500, they even threw in some free PC game coupons for me!
I also like that these guys are available 24 hours for any tech support over the phone and the reps actually speak perfect english too.
Sure you can always save more money building it yourself and honestly, I thought about doing the same with the help of a friend of mine. But, I was so glad to pay a little more to rely on a company for their expertise, support and for building me a sweet looking gaming pc. Even my friend was super impressed! No regrets what so ever!
ok what do u guys think of this build i put together. i just put the main stuff
ASUS P8Z77-V LK (USB 3.0, SATA 6Gb/s)
Intel Core i5 3570K Quad-Core
650 Watt Corsair TX650M
Gigabyte GeForce GTX 670 2GB Windforce 3X
8GB Corsair Vengeance DDR3 1600Mhz (2x4GB)
Genuine MS Windows 7 Home Premium 64-Bit Edition
1TB Western Digital Caviar Black SATA 6.0Gb/s, 7200RPM, 64MB Cache
128GB Samsung 840 Pro Series
that's a very good looking build and one that would cost you $1,800 from Origin for something similar