Depends what you mean by future.
Short term or as a career.
I'm not sure how good RAF training will be. In my time, the RAF had a wide variety of aircraft and therefore the training had to be good enough for you to work on any of them. With the modern Air Force likely to only have a few types, will the basic grounding be as in depth? It will certainly be good enough to manage on the aircraft they will have but I really don't know if it will be good enough to get you into civvy street once you leave, if that's your long term aim (not that its easy now).
Avionics / Mechanical? Depends whether you want to get your hands dirty
