That's not for me. At home, I'm a bit of a novice audiophile. In the car, I want an entertaining system, not necessarily a very true, flat, reference system.
What's the point of ultra low distortion and perfect reproduction, if the MINI is a small, plasticky space, with engine and exhaust actually tuned to be noisy, and loads of tire and suspension noise.
As much as this goes against my preferences at home, I think a car system deserves to be loud, thumpy and fun. Just overcome the road noise, and overpower bad interior reflections and frequency loading, with sheer power.

Chilli Red/White Cooper S, Sport Pack & Sunroof. Delivered June 12th, 2002!
Now with MCS Winter Tire Package.