like this one hasn't been debated a million times.

revshare if you believe in the site, pps if you don't.

which means in most cases pps.

but nowadays the sites you don't believe in are all dying, meaning a tendency to shift to revshare.

but, as everyone shifts to revsharing the same believable sites, sales per webmaster will tend to fall because the sites will become oversold.

so you are damned if you do and damned if you don't.