I wish I can tell you how mine is turning out only because that I don't have one of my own. I'm only interested in the Armada Unicron version in which hopefully the prices had deflated itself a bit. Perhaps the folks over @ Toyboxdx or TFormers.com might provide better insights than me.
I have had no fit issues with my 2010 Unicron. I did however had to fix the wings. They were put on backwards and one half of the connection posts that attaches the wings/ planet ring was the wrong one so I had to do a slight modification to make it work.