I can't stand the mannerisms of Sawyer. In fact, I'm pretty sick of most Lost actors at this point, apart from Locke. Big "please no" vote for me. I also couldn't take Hayter seriously. Snake has to look imposing and tough, and a voice and stubble ain't enough to convey that, IMO. An unknown would probably be best, in my opinion, though I can see Ray Stevenson as doing a decent job.