I have had the 3.0 M3 & the Evo, sold the 3.0 after nearly 3yrs of trouble free motoring including a 1500 mile round trip upto & around Scotland & back to Kent, sold it with 123k on it, only thing was servicing was expensive as it had full main dealer hist insp2 was about £800 inc rear trailing arm bushes but it was a lot cheaper to maintain than my Cossie that i had at the same time. Had the Evo a few months its deffo quicker & feels a better car than the 3.0 i had, all i've spent on it is 6 months tax & 1 brake light bulb, if you buy a good one you can't go wrong, they are nowhere near as exciting to drive as a stage 3 Cossie but they are a easy car to live with day to day.
Simon.