Wolves look doomed now, not sure why they sacked McCarthy. I'm going for Wigan and Blackburn as the other two.
Bolton have an experienced manager in Coyle and seem to have a good scrapping mentality which is winning them games. QPR appear to have the most quality since the January window and aren't having too much trouble winning games, also as annoying as Hughes is, he is a good manager.
Blackburn and Wigan both have the scrapping mentality required but IMO Wigan have tough fixtures and a lack of quality in the team, and Steve Kean doesn't have the support of the crowd, which is massive in these situations. I hope Wigan survive however, as I like Martinez.