I do believe the APU mech has had the most complaints of any McF product in terms of QC over on their forum.
And the complaints were all that were listed here. Broken shoulder joints and waists snapping. Although most of the complaints were that this was happening while taking the figs out of their packages.
Last McF fig I bought was the Reborn 2 Mandarin Spawn. The sword sheath had broke in package, returned it to WalMart, ended up going through every Mandy they had in stock all with broken sheaths. On the last one I just e-mailed McF customer service for a replacement sheath. 2 weeks later I recieved in the mail another broken sheath and some hockey pucks (which I no longer have thanks to my exgirlfriend).
Its bad enough that all they seem to make anymore is statues, but its even worse that when they decided to go in that direction, QC took a major nosedive.