Just remember the regional sector is extremely fluid. Your making an educated guess regardless. The only thing that seems to hold true is the place to go now will be the worst place to work in two years.
In December 2010 Mesa was just out of ch 11 and had a ten year upgrade, and furloughing, and trust me Mesa is not a good place to an fo very long. Colgan was the fast upgrade (those guys ended up in now endevour and are fos still). Horizon was a 10+ year upgrade and no relief in sight, those guys are upgrading. Eagle was a guarentedd place to go to not be whipsawed. If you went to Piedmont assume you'd never upgrade or never see real flow. Eagle, expresjet, and pinnacle (now endevour) were the three most sought after places. This industry has an unpredictable wild card just around the corned. My guess is flow and the soon large bulk of mainline hiring they will consume.
Like the experienced guys on here tell you, pick somewhere you can tolerate the current conditions and contract of in the base you want. The rest are rapidly changing variables.