jrsx99,

The most important thing is to pick a regional where you at least see some movement. The first that comes to mind is Compass. You have guaranteed Delta slots for those Compass captains, which means there will be plenty of movement from right seats to left, and newhires into right seats. You do not want to be a 6, 7, 8+ year RJ FO at a regional as is happening almost everywhere. It sucks!

Regional bases, pay, contracts, ALL of that can change overnight and therefore I wouldn't necessarily base your decision on any one factor. At a regional, movement is most important. XJT may have a great contract, but ask their late 2006 hired pilots who are still FOs just how good a contract is when they are still 7-8 year FOs makking FO wages with no TPIC time for the resume.