I've moved all three of the websites I've worked with to Epom Market and I'm quite pleased with the result. The extra placements alone made a noticeable contribution to my earnings. Also, people seem to be saying many good things about their support team. I haven't encountered any issues that would require me to contact them, but it's a nice bonus, I guess.
P.S. Was using AdSense and CPMFun before switching to Epom.
@alika, my question is : if you use epom +Amazon CPM with adsense, you might display more then 3 adsense ads per page - 3 by adsense code and more adsense ads that epom code provides, doesn't it violate Adsense policy?
Epom runs these ads via AdX, so they are not limited by the 3-placement restriction. In their case, the limit is five placements (according to doubleclick guidelines: [google.com...] So no, you wouldn't be breaking any rules and your website will remain in good standing.