Citabria with an 0-320 fixed pitch prop (Mogas STC) a metal spar and hangarage.
It's on Annex 2, it's cheaper to buy than a cub but more powerful and also you don't need a CAMO if you run it on mogas it's even cheaper. Has good spares support and rugged undercarriage, it's also easy to land and keep control on the ground so you don't need to worry too much that people will groundloop it.
To be honest, there's only a very few people that will pay the premium to fly nicer planes, they say they will of course right up until the point where the get to choose between £110 for the Tomahawk or £180 for something fun.
Still if I was to own a certificate aircraft of that type it would be that very plane, there was a chap in Ireland selling one a while ago but I couldn't bring myself to wear the cost of the annual year in year out.