I haven't tested any. But I am looking for one. My traffic is mostly organic from US, UK, AU ~750k page views and 300k unique visitors per month, ~60% mobile. The website is a service website, average duration on site - 15 minutes with very low bounce rate and average page views - 2.45 Currently monetized only with Adsense and talking with some people for direct promotion. Was rejected by Selectmedia last month as they wanted 250k page views per day.