What is the best affiliate network to go with?

I am starting a website and I need a little advice on which Affiliate Network to go with. I need mainly banner advertisements that will have a decent payout for 1000 impressions. Also, I need to be able to categorize my ads because I will need ads that are geared towards music and entertainment. Also, I need video advertisements to run before videos on my site. Any help in the right direction would be greatly appreciated.