I ran into a guy I know who jumped... he won't openly admit he regrets making the jump, but listening to him whine about the flexibility he had that he no longer has with respect to rearranging his schedule, throttling up or down how much he wants to make and credit, he really doesn't need to. At least he has a hope of flying something other than a 737 at some point.
You also may want to read the WB FO Timing thread under MAJORS.