I was on another forum site that is more USA oriented, and the guys on there were all raving about the MK II. Saying that its better gun than the MK III, because of the extra cleaning from the chamber indicator, and less material on the wall because it was machined off. They were saying that the new magazine release button on the MK III is'nt the greatest and the old MK II bottom release works better.
I feel quite pleased about my decision to save myself a few bucks and buy a nice used MK II now, then paying the extra money for a new MK III.