My editor at Proxima just sent me back his first pass over Aphrodite's Dawn, and I must admit I was a bit nervous when I opened the first file. As a relatively new writer, you hear a lot of horror stories about draconian editors ripping your literary child to shreds or demanding copious rewrites.
Well, I'm about 2/3rds of the way through reviewing his notes and I have to say its wonderful. There are one or two things I don't agree with, or understand (yet), but every edit adds to the the story in some way, and yet none of them take anything away from the story being definitively 'mine'.
Its a very satifying process so far, and I'm learning a great deal from it.
(And no I'm not trying to butter my editor up so he will be nice to me)