As others have said, building your own will be a rewarding experience. It will not only cost less, but give you a better selection of higher quality components and more importantly, build your confidence in working with hardware. If you simply don't want to BYO, then I'd recommend Maingear over others for value and reliability.
I'm am thinking about this setup:
i7 2700k - i read that the 2500 is sufficient but how about future-proofing this core component to a certain degree?
ASUS P8Z68 - is this good enough of a MoBo? I am not planning on doing any OC'ing.
Corsair Vengeance 16GB DDR3 1600
2xSLI GTX570 stock - having an SLI setup, wouldn't it outperform a single 580? Also, read that OCing is sometimes giving issues on BF3
SeaSonic Platinum 860W - should i go for 1000W?
500GB hardrive 7800
Case, how about a Corsair Carbide 500R or a Thermaltake Element T?
CPU cooling looking at the Corsair H80, or could i go for the H100?
Do you have any ideas on how to get the best fans for that case?
I would really skip the closed-loop water cooling solutions. They're not always as good as regular old air-based coolers, and worse: they can add unnecessary vibrations to your case producing more unwanted noise. Even the "good" Corsair water coolers are not great. Save your money and go with an air-cooler that has good reviews. Best value for performance would be Xigametk, but there are many better performers out there. Just don't buy Zalman coolers, as they're overpriced for what you get out of them. But if you *really* wanted water-cooling, roll your own system, which I wouldn't recommend for your first PC build. Use air-cooling for your first build. Cheaper and easier to work with. Can you tell I have an aversion towards liquid cooling? lol.
Best fans: I used to love the Scythe SFF fans, but they no longer make those. If you want some of the best fans, there's a good variety out there. If you want highest airflow per fan, Delta or Rexus is ideal, but they're also NOISY! If you want the most quiet fans I'd go with Noctua or SilenX. The absolutely most quiet fans I've ever had the pleasure of working with are Noiseblocker models. You can't get Noiseblocker from Newegg, though, so have to hit up the hardware enthusiast etailers/resellers for those.
Also, I'd highly recommend going third-gen SSD for your boot drive. They're worked out pretty much all of the stuttering issues with the latest Sandforce, Samsung, and Indilinx controllers. Go with either an OCZ, Samsung, Kingston, Corsair, or Intel SSD. I'm really liking the new Samsung 830 series and the Kingston V200 series. I used to be a fan of the OCZ Vertex line, but their firmware issues always leave me POed. Intel SSDs are the shinning example of reliability with performance (but not bleeding edge performance), yet you pay a premium price for them.
For your data drive(s), go with Western Digital Black or higher-end Seagate Barracuda drives. I like WD because you know the "Black", "RE", and "Velociraptor" series are higher performing drives. For Seagate, their models are all over the place, same great, some cruddy. Both WD and Seagate have good track records for reliability. Avoid Toshiba and Samsung HDDs like the plague.
<message edited by cipher_nemo on Tuesday, April 03, 2012 8:41 AM>