Which is best adsense alternative?

lol if you get accepted into media.net they you should use them alongside, no other, maybe some cpa here and there.

there is no CPC adsense alternative.

Media.net was doing just fine for me until after about a month of using them they started lowering my RPM until if finally got to 0. All of this happened while my impressions were pretty steady with fluctuations here and there. I contacted support multiple times and got no reply.

Anyways, I would say try out Amazon Affiliates I've had some decent experience with them.