The most qualified person on either side is still Newt but he has been demonized (some of it deserved) to the point that it would be difficult for him to win. I would however love to see him in debate with Obama. In those two men you have representatives not only from different ends of the political spectrum... but also a stark contrast in understanding of the issues and the world. Even if you do not agree with him, Newt knows the issues and has a logically deduced position that he's willing to stand by.
The guy who made up the most ground with me is Huntsman. Though he holds some positions I disagree with, I like his presentation. He seems to have clarity on economic issues and what he would like to do.
Perry definitely lost ground with me. Romney still cannot get my vote.