I have the 2.2 and I quickly found myself wanting more from it. I could not afford to run the V6, and actually, I test drove the Q2 version of the 3.2 when I bought my 2.2 and found it less composed and understeery. (Have never driven the Q4, but I am sure this is not a problem with the 4wd.)
Anyway, I had it put on a rolling road and found out it was making about 20bhp short of what it should, apparantly due to the restrictive exhaust and induction. Both of which have now been binned, and I have noticed a dramatic increase in torque and the engine revs more freely.
Just got to get it mapped now and I should be seeing 200bhp. It would be interesting to see the bhp/tonne compared to the standard V6 then.