Highest quality Push Traffic providers?

[aarvin2]

Hi guys i've tested a few sources now like Propeller, Zeropark and Richpush.

Using the same offers, only Zeropark and Propeller worked well. I made around 90% ROI on these.

I made a test and it concluded that lots of the clicks on RichPush were fake. ROI was terrible even after heavy optimization and losing more than 60 Euros over a few day. I have the say that the Account Manager was extremely nice and patient. It's a shame their traffic is fake.

Are there sources which are on par or higher quality than ZeroPark and Propeller?

Thanks in advance!