It has to be the Harrier.
In respect of questions 1 to 3, then it's Harrier, Harrier and Jodel. I started on a C150 - it certainly 'blew my frock up' at the time, to quote a very good friend - (and amongst other things, I'm currently instructing on the 152 and 172), but I suspect I'll eventually end up with my old and trusty Jodel!
A