Choosing PPC system... can anyone help?

Hi, All!
Let us here discuss the most interesting PPC system? What do you consider most promising? Where more bid cost?

What system do you prefer? and what think about them?
I can not choose the appropriate PPC system …

can anyone help?

Can PPC system considered as basic pay on the site?

Are you talking in context of publisher or advertiser ?

bluebelt91, context of publisher …

Asnolex, thanks, will check what my bids will be obtained … discuss this option.

This is the best option? or may be something else to try?