I test drove a M3 6MT and I did not find anything wrong. I even went WOT from 1st to 2nd gear and nothing.
I also tend to believe its more the person driving then the actual car.
I ordered a 6MT.
2017 M2 - Future ED
2011 BMW M3 Sedan Alpine White
Picked up via ED 9/27/2011 & Redelivered 11/23/2011 **SOLD**