A and C, what's wrong with PFA aircraft???
Dan, I completely agree. As for the cost of buying a share of the aircraft, this can be les than £1000 if you look hard enough - that's the cost of 10 hours of renting a PA28! And, what's more, you'll be able to get most of it back when you sell the share - assuming you don't get so hooked that you decide not to sell of course!
The only problem is that most of the cheapest aircraft are single-seater tail-draggers, so you'll need to get a tail-dragger checkout on a different aircraft first, and find someone who will insure you without much tail-dragger time.
FFF
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