Tournaments, Breakout and GG are good for playing a solid poker (freerolls in my opinion of the best) the rivals fold you and you do not face so much variance,
partypoker has a Cardmate at 11 am and starts with 100k blind chips 500/1000 if that's deep because I have to admit that I feel very comfortable with that kind of tournaments, for cash zoom, 888poker and PokerStars simply because of the number of players in the room. I should give focus to ACR you can take money without first deposit but I do not finish hooking.
It depends on what suits your needs, if you are regular cash you should try on titan or party if rake. The rest I always recommend is PokerStars and 888Poker