What do you prefer CPC or CPM?

[Davidwatson]

CPM ads, therefore, are much more fickle. When you’re paying for CPC, what you’re paying for is a guarantee of a certain number of clicks. If your ad performs well, or your ad performs poorly, it doesn’t matter; the end result is your bank account is $5,000 lighter and your site has 5,000 more clicks. Facebook, Google, or any other platform, runs the ad as long as it takes to get the right number of clicks.