What is the best advertisement service for a forum with 16K Absolute Unique Visitors?

1st: Sad thing, My domain is suspended by Adsense, so I find some alternatives.
2nd: If this thread is wrong section ( I cannot create threads in other section),
Kindly move and please don’t delete. I really need some suggestion, help and opinions.
I was approved in this 5 advertising service.

Code:
*Adhitz – http://adhitz.com/
*Buy and Sell – http://buysellads.com
*AdBrite – http://www.adbrite.com
*Chitika – https://affiliate.chitika.com
*InfoLinks – infolinks.com

Which should I go?
What is the best service to use?

Please leave your comments!
Thanks you so much!

See original post by nadlerz