pokerstars because :
1) I can see cards suit without my glasses (I made several confusions on Empire between clubs and spades no joke)
2) time for play is decent, I hate gaming club timing for instance which is desperatly too fast
3)correlated to that is that the window comes to you when it's your turn
4)you are not "forced" to see a window, I hate Paradise poker window when cards are dealt there's no way to see a window behing this one before it's your turn to act
5) there are always tables to play at any game
6) tourney are sufficient in number, buy in size and hours
7) play is definitly tight and a good way to progress
8) hand history is quite well made compared to other site, but it could be better
9)FPP reward is great, it made my wife happy last week with a nice T-shirt and herr husband too by winning a 1200 FPP tourney qualifying to the 500+30 !=
10)I like my avatar there there's not a day when people are asking me
a) to marry me
b) if my boobs are real ....