Since the title mentions other styles I'll bring up the Airdock. The Airdock is different than most lifts, it uses a bladder system to lift the boat. I bought one last year shortly after getting my boat and I've been very happy with it. I had some technical issues getting it setup but the phone support was great and they got me squared away. They also have local dealers who will handle the setup if you prefer.
The big advantage to the airdock for me was flexibility. I slip my boat in the Delta so I wanted a lift, but I take the boat out for the off season so I needed something I could take out and store in a reasonable amount of space. The bladders come apart and roll up so they can be stored much smaller than a conventional lift.
If you have a seasonal need, or might want to move the lift to different locations the airdock is something to consider. http://www.airdock.com/