SFCJ -
I have an Autolifters lift, and am very happy with it. I bought the M6 model, while my friend ordered the M80 model. I didn't have room for the M80, my friend has a much larger garage, and is taller than I am, so he got that one. With the M80 in a larger garage, you don't have to remember to "duck" when you walk under the lift.
I had one bay of my garage converted to a cathedral style ceiling. I can put a car on the lift, and raise it up high enough to store a second car under it. It is one of the best investments I ever made.
Since we both got the same brand, one of us ordered "solid" wheels (can move lift even with a car on it, on smooth surfaces), and one of us got pneumatic wheels (can move WITHOUT a car on it on rough surface, or even outdoors). The wheels were an accessory, and I haven't used mine yet, but, if the time comes, I'll have them handy.
Had the units shipped to a trucking terminal near home, and picked them up with an open trailer (one at a time).
I decided I preferred the design of the Autolifters unit, with a closed 4" post versus some competitive designs with an "open" post design - it looks safer to me. We were both pleased with the quality of the product, and the service.
regards,
cobrajeff