Frankly? I'd make my own.

Start with http://www.amazon.com/Cavalry-eSATA-External-Enclosure-EN-CADA2B-ZB01/dp/B004KKXLLG/ref=cnet

And I really like the Momentas Hybrid drive. It was so good that I ordered a second to replace a good working drive in my other laptop.

If I was to do this, I'd get that case then a pair of these:
http://www.amazon.com/Seagate-Momentus-7200RPM-Hybrid-ST750LX003/dp/B00691WMJG/ref=cnet

It's not 2TB but 1.5 and my bet is with the 2.5 inch drives in such a big enclosure it will be cool and quiet. Yes, I might have to get some mounting kit or make my own but I do that sort of stuff (I make things.)
Bob