I just got these guys in today, and they aren't half bad. They are a bit bigger than I expected them to be, so that was a nice surprise. I do wish that he would have come with a rifle for combined mode. The plane's weapons combine, but it just doesn't look very good. If you have PRiD Arcee, her gun makes for a decent rifle for him.
I was never able to find a decent size comparison before, so now that I have it I figure I might as well give you all one. Hopefully it's helpful to anyone thinking about getting these.