I like the Venetian better than Caesars but they both usually have better structures than the other casinos. Some will start you out with a decent size stack relative to the buy-in, but they usually have 20-minute rounds or a structure that doubles every level.
The Venetian and Caesars tourneys have a better pace and don't turn into a a turbo shove-fest after a few hours.
Of course, if you want to play a turbo shove fest with a few hundred people, these are not the tourneys for you.