Pacific poker has by far the most awful players, so if you want an easy game to start out, you could try playing there. They only have 5 person sit-n-gos, but they have both low and high stakes which is good. Same goes for their cash games. Those are 10 person, but the stakes are high and low, which again is good.
Party Poker has quite a bit of bad players as well, but they only have 10 person tables, both cash games and sit-n-gos. It depends on your preference. I used to only like 5 person, but you get used to both. Also, Party Poker allows you to multi-table, or, play more than one table at once, unlike Pacific where you can only be in one tournament or sit-n-go at a time. Sometimes this is nice being able to multi table because, aside from being able to rake in more cash if you're winning consistently, it can help you stay real focused and concentrated on each game, rather than doing other things like being distracted by the TV, phone, etc.
