I play mostly at Jet Set Poker, and enjoy their multi table tourneys.
Not too many people, a reasonable structure, and a lot of the same people, so it's easy to keep notes.
My favorite tourney starts a 9pm central time, and is 20/2 NL.
I had a good run and won it Sunday (132 people - $660) and again on Monday (105 people - $505).
Jet Set does a weekly ranking based on your 5 best tourney scores for the week, and I am currently 4th (my former best was 14th). I consider this the bigger feat, because most of the higher ranked players play in at least 5 tourneys a day, if not double that.