Aladdin in 04 - It was fine, we were only there for a few hours to sleep and were at the casino a little bit.
The Venetian this Feb, for a conference. Very nice hotel, nice rooms, a little too ornate for my taste, but definitely a lot of room in the suites. I was in the newer tower, Venezia, which seemed miles away from the shopping and the conference area, has its own pool and front desk. I liked the casino. Hated the pillows! Argh! Had them bring me one that was not feather, but was still hard to sleep on. There is so much to do at The Venetian.
Treasure Island also this Feb, after 4 nights at The Venetian, the beds at TI were just wonderful! They also had feather pillows that I didn't care for at all. The room we got was much smaller, but I enjoyed the hotel, the restaurants, the clubs, the casino and the location. There is a tram to the Mirage next door and the Fashion Mall is on the other side. It is across the bridge from The Venetian. It is just a quick walk from the forum shops at Ceasar's. Next year we may somewhere else just for the experience, but would definitely recommend TI.