888 is OK. Plenty of new (bad) players, tournaments are very soft, decent traffic, decent first deposit welcome package, they often run promostions.
I have mostly played on 888 so I can say it's a solid site.
Don't really play on PP, just have an account there and that's all, so I can't say much about PP, but one thing is for sure, their software is too old so I don't really like it.
I would go with 888.