This is by far the best build I've seen by any site. Finaly you throw out the Blueray drive and focus on performance!
I wouldn't trade the Antec 900 for anything except maybe the Rosewill Blackhawk, or, if you want SLI, its big brother Thor V2. I'm also unfamiliar with the Zalman cooler, but that doesn't mean I'd give it a try over the NH-D14. I always thought there's a reason why some PC parts such as the Zalman coolers never make it to reviews.
Since you went for a 120GB SSD, a Seasonic Gold PSU and Asus DCUII card, then the Blackhawk and NH-D14 would have made this build not only the most powerful under $2000 build, but also the quitest! You were so close to perfection!!
You guys must be busy all the time but you have to catch up on 30nm RAM kits from Samsung.
Stop the hating of triple slot VGA coolers! SLI is easy because You don't have to pay more than $350 for a spaced out, PLX-equipped, premium Ivy-bridge motherboard! Take a look at Gigabyte's Z77 Sniper and you'll see it's easy to have a triple slot cooled card in SLI with enough space between the cards.