Terms to Pursue w/Competing Banks?

Hello everyone!
I have a few banks interested in my deal.
What experience can you share with me and the community about negotiating with banks to get the best deal?
What terms have you had success negotiating? I'm thinking (a) rates of course, (b) delayed initial payment, and (c) rolling line of credit. What else should be on my mind?
Thanks for anything you can share!
- Anon. (for now)