Alright, I got suckered into Bosch Platinum plugs, not +2 or +4 just regular. Bosch only recomends this one for the M110. So I go to the Bosch website tonight, and what I've read contridicts some of the against arguments. Heres the link:

http://www.boschusa.com/AutoParts/SparkPlugs/Platinum/

eg: requires less voltage, cleans faster, remains cooler and better access to air/fuel mixture

Moreover, Bosch give you a money back guarantee of satisfaction.

All I know is for the moment I have a smooth idle, lightning fast responce and stonking acceletation, oh yeah I forgot its a 280 euro

I'll keep you updated if it changes.