Separate names with a comma.
Pay per sale or pay per view?
Never heard of either, I assume you mean CPA and CPM and then it depends if you are a publisher or an advertiser.
It depends on your content, but in most of cases you PPS is more profitable, especially for adult niche.
Let me explain
PPS (pay per sale) - this is better for advertisers (buyers of traffic ) because they pay only when they get sales on their product.
PPV (pay per view) - this is usually better for webmasters (sellers of traffic)because they get paid on every impression without having to worry if the advertiser makes any conversion.
Hope this helps