Just go with the regular e90 offset and you should be fine. The M3 offset doesn't do anything for handling. I take it you are going for look.
2009 335i CoupeLBM - Black Dakota/Glacier aluminum-6spd|Nav|M-Sport|Premium|Logic7|Heated Seats|CA|BMW Performance Suspension & M3 Control Arms|M3 lip spoiler
2009 X5 3.0-AW-Black Dakota/Bamboo|Premium|Tech|Cold Weather|Ipod Rear Climate|
07 335 coupe - Sold
07 X3 - Sold