In order of preference regarding the respect for yourself and our profession:
1) Pinnacle if they get a respectable contract
2) PSA
99) Mesa

Don't waste a bit of your time, money or skills at Mesa. I can give you 200 reasons why. As ex-Mesa, now at XJT, I cannot be more thankful that I don't work there anymore. Reserve at XJT was better than being a line holder at Mesa. It's worse than you can imagine, I just wish someone told me that before I made the stupid decision to go work for the devil JO.