Errr, ACW, sure you didn't mean it that way, but that could give non pilots or hardcore straight and level puritans the idea that all aeros fiends are dangerous nutters who should be banned, when in reality most us love cocoa and knitting, are kind to small animals, love our mums and so forth. Of course there are risks in aerobatting, as in all flying, and of course flying aerobatics is exciting, but the whole point of getting some training is to do it safely and not freak yourself out in the progress. Doubtless that's what you meant and no need for me to get all po faced.
PS: agree with Evo's comments re the problems of doing lots of aeros on a budget (mostly expensive kit, burning lots of fuel, and maybe add a few hundred quid in for a parachute). Agree also re the PFA: I've heard that one economical aerobatic PFA type to look out for is the Tipsy Nipper.