Which PPC shall I use

I am looking at advertising my site www.talkpsp.com

I am going to hold a competition where you can win a PSP. I am looking at spending about £500 / 800usd each month, in an effort to get people to sign up and contribute in my forum. but am not sure which PPC to use, so far im thinking of

www.adbrite.com and
www.adengage.com but am not to confident they are going to perform

Anyone got any ideas where else I should try for PPC ???

 

Usually my advice would be don't start with the small companies.

Start with adwords/yahoo/overture
then depending on your success try the smaller companies adbrite, bidvertiser, clicksor, alternateurl

BEFORE you spend a pretty penny signing up, these companies usually offer some FREE money (usually requiring a small deposit)

see http://forums.digitalpoint.com/showpost.php?p=1475290&postcount=2

 

Google.Com / Yahoo.Com / MSN.Com / IQSeek.Com / SearchFeed.Com / Miva.Com

 

If you are looking to get yahoo.com, I have posted a 60 pounds coupon code on my site. Take advantage of that.

 

try adbrite, they have a bunch of gaming sites that you can advertise on for cheap prices.