It depends, I won satellites to get into WSOP, for WPT I qualified online back when PS was pretty active.
As far as the tournament goes, you can sometimes rake a lot of pots by being hyper aggressive, but sometimes it's just all about the cards too. I tend to build a stack by being aggressive then sitting back a bit. I wound up in the money in 3 out of the 4 events. The best was in one of the WSOP (05 I think) when there was a crazy hand where I quadrupled up when I had a slick and flopped a boat and three people went all in ahead of me post-flop... with KK, Ax, and Kx, respectively. It was pretty amusing.
I'll usually play 4/8 no limit or 10/20, 20/40 limit games... sometimes pot limit on the last 2.