I got the TwinMOS, obviously that is what I'd do, especially if you have a DFI that can volt it up, though most of the other suggestions for memory in the lower price ranges are decent suggestions as well, you simply do not need to spend big bucks on memory anymore (which is something I've been touting since well before Zebo did his memory matrix)
I would personally avoid the Kingmax, I have had 5 sticks of Kingmax and 3 of them didn't even perform up to specs (had to relax memory timings on one stick and one pair didn't run in dual channel unless I ran 2T CMD rate). Kingmax "lifetime warrantee" was ZERO help because they wouldn't respond to my requests for service. I eventually cut my losses, sold them to other people (with full disclosure of what they would and would not do, of course), and got different RAM. They were not the exact same Kingmax linked in this thread.