I reckon that merc would be the only one that you can actually live with.
I'm getting old... :/
My business partner has a lotus exige, upgraded the supercharger recently, it's a total nutcase car now, a proper track monster.
But it's a rather uncomfortable, noisy, tiny-tiny car to live with. Even just getting in and out is a friggen exercise.
900kgs and ~200kW at the wheels is fun. And it revs madly, so you step on it in 2nd and you're past all speed limits of australia in 3 seconds.
I still don't want one.