Ran one for 8 or so months, found it to be fast but somewhat uninvolving to drive, lack of a Limited Slip Diff is a big downside for me. Probs as quick as my old E46 M3's were but no where near as involving. Mine ran on 19" wheels, looked good but were way to hard on the road and you felt every pothole. I can understand why these rims are so prone to cracking.
Did i enjoy owning it - not hugely.
Would i buy another - no chance!!