RedShoe,
As someone who has dealt with Donny on many levels, I can tell you:
1) He takes his professional criticism to heart - makes changes and improves on his work
2) He respects his delays and is very hands-on/reachable with his clients
3) His work gets better and better - he has good work ethics
4) He keeps his word
5) Although it seems like he's sometimes talking out of his ass, if he says he can do it, until now, for myself, I can say that he's come through on everything
6) Sometimes, I wish they would chain his hands behind him when he gets close to a keyboard
7) He loves his fucking watermark
8) He sometimes doesn't know when to turn his tongue and bite his lip and step away from the keyboard
He had a run-in with some other producer and that producer pre-emptively came here talking shit about him, got the ball rolling for the bandwagon to continue to diss his work, his watermark
and anything else that came out of his keyboard. Now once the truth was out, people can't lose face, so they continued to insult him - partially by his own fault because for awhile, anyone that tried to talk with him, he was very defensive and would lash out even when it wasn't warranted.
All in all - if you are going based on his work ethics - he's a good person to work with. If you want to base yourself on board warriors and board personas - then avoid him like the plague. It's really up to you and it depends on what dealings you will have with him.
That's my personal and professional experience with him and I'm not guaranteeing you'll love him - but I look at people who walk the walk and not only talk the talk.