I have a 2 post lift & like it a lot. Unless you are working on large suv's or trucks like 3500 Dodge, F-250, F-350, etc, 7000lb capacity would work for you. I have a 10,000 lb Mohawk with a weight gauge & according to that the only vehicle I've had on it over 7000 lbs is my buddy's 1 ton Dodge diesel dually which is 7500 lbs, another buddy has an older suburban which is about 6400 which is well within what that Rotary will do. As far as the vehicle getting tippy when yanking on something, I have 2 - 2 ton underhoist stands which steady things right up even when jacking up a motor while the vehicle is in the air, they also come in handy to hold exhaust pipe in place while replacing part of it. A 4 post is better for storing vehicles but I use mine strictly for working on cars so the 2 post works for me.
And for those who say they don't work on short wheelbase vehicles
