450000+ Uniques per month. Whats my best option for ads income ?

Hey Webmaster buddies, Help me out here…
I have a website that has more than 450000 + Uniques per month with an Alexa rank below 10k. I have traffic from US, Germany, UK , Canada, India and singapore mostly. But i am not making good or steady income from anything. I need some good CPM programs or any program suited for me to make money. My site is a download site.
I have tried adsense, adbrite, adtoll, adsdaq, Widgetbucks, cpx, kontera, neverblue and clicksor.
Adsense is not a good earner for me.
Adbrite used to be good but then earnings dropped like heavy rock from Jan 08. Right now it’s just a waste of space
Adtoll is a good site, but i find more success there as an advertiser than as a publisher. I am getting extremly low rates there too.
Adsdaq was a constant backup for me, but recently their fill rates are terrible.
Widgetbucks ? […]

See original post by thedarkknight