Well, I've never had what I consider to be a horrible experience, so I'll just give a thumbs up to those that I've dealt with:
I know there are more, but I can't remember them off the top of my head... I'll edit this post if / when they come to mind.
And Spider-Fan, PM me with the artist whose info you are looking for... I might have it or (far more likely) know someone who will have it.