I had a few minor problems, but nothing major.
The right 'wrist' wouldn't rotate. The stud it pivots on was driven in too tight. I had to pry out the stud a little with a fine flat head screwdriver. Lucky the plastic didn't gouge.
1. Chest panels are wrong, but like Kyle said, who cares.
2. Finger Prints are visible on the paint, I'm not sure how to combat these...
3.The front part of the cockpit was not assembled properly, but hey presto 1 min with a screwdriver and its fixed.
My Skywarp was Perfect, MP-5 had to be clear coated on the chrome, MP-3 G1 Starscream was perfect assembly wise, the fluro red paint and dirty white paint really bug me. No pilot would let his aircraft be that dirty!
MP Thundercracker is worth getting, as are all the seekers. Oh and apply the stickers or at least the wing stripes. They look heaps better with them on.