Cheapest one, save for something proper.
I have some driving experience vouchery things ready to spend - I can chose between 3 laps in a Lambo's, DB9's, Porches etc - yes i'd love to drive them, but I know full well that i'll never get them that fast, I'll be told to slow down all the time - whats the point in driving a supercar if they are always wanting me to stop using the "super" bit.
For a little less I can do some (over double) laps in an MX5 / Mazda MPS (250 BHP and FWD. Not quite sure what the point is in that tyre eating monster but hey). Less exciting, yes, but i'm fairly sure there will be a lot less nannying going on.
My new car is much much much faster than the Wira - but I could spank the living shit out of the Wira and have lots and lots of fun very near the limit. The limit in the ZT is waaaaaaaaay to fast for public roads even in perfect conditions, so whenever I try to push a little faster, it still feels a little unfulfilled.