Pokerstars is the safest site to play on with the best customer service. On the flip side however, imo, it is also the hardest and has the toughest players. It also depends on if you are a cash game player or a tournament player. If you are depositing like 100 or 200 bucks, here is what I would do. The $4.40 180 man sit an go's on stars are probably your best bet for softness. People play pretty loose on those, especially in the early blind levels. If you are playing cash games, just play abc poker, sit on top 10 hands and try and get paid off with them.
I have been playing on Mansion lately, very soft tournaments.