Personally, I like the venetian because the tables are spaced very far apart so there's plenty of room and there are always people playing so your game of choice isn't likely to ever die. the table may break but there's always at least one game of my limits ($1/$2 NL) going at any hour of the day or night and that's not always the case at other casinos.

I like the Bellagio because there are a lot of players there but the tables are too close together and you can get cramped depending on what seat you're in.

Aria was OK but I thought it was kind of loud since it's right next to the casino floor and there aren't any real walls segregating it. And smoke will make it's way in too because of it. but the room was nice and comfortable.

I don't like the MGM mostly because it's right next to a club so at night it's very loud.

Beyond that, I think the rest are pretty much the same. they'll have 1-3 tables of $1/$2 NL going depending on how busy it is.