One who springs to my mind is Mike ([Only registered and activated users can see links. Click here to register]
), who has mastered stuff for me in the past and I can attest to the fact that he knows his stuff. The other is Ben (Benwaa), who mastered my first album and he did an outstanding job of it, too. The only thing is he's no longer a member on here, though you could track h8im down via his label, the details of which are floating around on here somewhere and should be easy enough to track down if you really wanted to..
Other than those, I suggest you check out the [Only registered and activated users can see links. Click here to register]
section here on the forum, if you haven't done so already..I'm sure you'll find somebody there who can help you.
Hope this helps..