Dont worry about a V-Spec, no real noticable advantage TBH, and weigh a bit more, IMHO best ones to get are really early GTRs as they weigh 50kg less.

RX7s arnt fragile, tuned properly (important word is properly!) they no less reliable when tuned than they are std, and cant say that about many cars!

Supras are probably the least hastle, as RX7s can confuse people as they rotory so very different, GTRs are very complex, at least a Supra is quite striaght forward.

Rudey- Supras are awesome, and can get silly power even from a std engine with bolt ons, the only reason i went for a GTR is grip, lots of power is all well and good, but you need to be able to put the power down to the tarmac, i was sick of the 3dr having no grip, and even with mega wide tyres youd still have the same prob with a Supra etc.