Thanks for your input. It seems that the vote for fun is unanimous. I am currently flying plank on airmed, which is rewarding, but I do miss the helos. The tiltrotor sounds like the ultimate way to go, but I'm not sure if I should chase more helo time first (1000 hrs turbine s/e at present), as I have 4000+ plank. By the way I'm 32.
Cheers chaps.