Wound't mind a M2 or an M4 for that matter.
But if you don't need 4 seats, then I'd buy a decent Z4MC and supercharge it. 450-525bhp is doable for £25k all in (at a reputable tuner of course) and would probably annihilate both
Of course you'd then need decent suspension and brakes at another £4k :roll:
...and of course it would never be worth what a used M4/M2 would :roll:
Insurance would be another matter as well (and one of the reasons I've not gone down that route) :thumbsdown:
You know what, an M2/M4 is sounding better by the day