May I suggest to those that have left Ryanair but are eager to return to stick it out where they are, it will get better. The problem with many of us that got our commands with Ryanair is that they allowed us to believe that we knew what we were doing. Unfortunately we didn't, i've learnt more in the last 18 months than I did in my five+ years at Ryan.
Big fish small pond and all that.
Good luck which ever way you choose!