2Auburn,
FWIW, I have helped a whole bunch of folks from majors who have gone on to JetBlue. They ranged from a current 12 year UAL Captain (really!) who quit to some Delta folks who were furloughed after being on the line only a few months.
I think most have decided that the upside of a better atmosphere at work and the potential for growth, coupled with the prospect of no chance of a recall for a loooong time made the jump worthwhile. However, leaving ANY organization and starting over is a significant emotional event.
One poster said try UPS or FDX. I'm helped folks from majors at both. You give up family passes and (if important to you) walking through terminals and dealing with the public. You get the most stable job in the industry, albeit with some tough flying if you are junior. Commuting to either of those from ATL would be easy.
My gut says JB is a great place to work--but you are on the line (not f-lo'd) at a company where there is a chaotic number of retirements and a rapidly changing structure. I dont' know if you'll get shown the door, but if you look at your paycheck AFTER the lastest givebacks and compare them to starting over at JB on the RJ, you still might be better off staying. Compare your healthcare, etc to the United Healthcare at JB and see what works best for you. Then factor in commuting stress.... If jumping still makes sense--press on and good luck. If the math doesn't work but you really want to leave, I personally think Airtran should be in your crosscheck--if they'll have you. I don't know if/how many ex-Delta they've hired. FDX has taken several guys like you, however, so perhaps you could network in that direction.
War Eagle and good luck in any case.