Since the mods have told me to stop trolling I'll give you a serious answer.

DEC is the hardest training you'll ever do. The washout rate is huge unless you have a lot of experience on the aircraft in question. Maybe you do but Breeze isn't exactly a going concern yet. You are gambling. If you're young and can gamble away 3-5 years its an option.

JetBlue is an established airline when a decent contract and a clean operation. They aren't going anywhere except maybe to get bought by a legacy. The hiring boom will ensure fast movement if you go there. It's the safe bet.

I'd take JetBlue.