Timing is everything...
http://www.1addicts.com/forums/showthread.php?t=6152
Great decision to deliberate. I'd go with the M3. May guess is that 400bhp and that exhaust note would be much more satisfying that anything they may (or may not) do to the Z4 M coupe.
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The 1-series is compact, endlessly involving, and absurdly fast...It is also more fun than a caffeinated circus monkey. - Automobile.
Crimson Red/Terra 135i, delivered 4/19/08, traded in 9/8/08. Recovering addict, still a fan.