Just built a 1000 sq ft, 3 car garage. I had planned to put a lift in, but went $10k over budget. Lift will have to wait till next year. Anyways, this lift is what I intend to buy. It's a 2 post and can be moved or put away.
http://www.maxjaxusa.com/
You can get it for around $2k. I'm going to put floor anchors in all 3 bays.