I mostly play tournaments and if i play online I rather go to Pokerstars.
they really do have the best lay-out in my opinion and you can't denie the pots are amazing.
Also most tourneys I play have a good stack/blind structure. Yes big fields loads of fishes but still it's avoidable and playable.
I have played at 888 poker
and although the fields are very small the play is very nice.
I really don't like the lay-out but I have enjoyed playing the webcam tournaments (fun setup)
I like full tilt poker
although I seem to not really get profits on that site. I mainly play their freerolls and then low stakes. It is somewhat fishy but much less then p.s.
poker is quite nice as far as I played there.
is quite nice I like the mission roads and it is quite playable. But I guess it's rather cashtable site.
The rest I dislike as either the room is really ugly or tournaments ain't worth it
As I have seen a few new rooms I will try to sign up to have a look there as well.
Still the big tournaments on pokerstars are hard to beat imho