Car lift

As a Professional technician I prefer the two post but we have a drive on lift for (similar to a 4 post) for some operations. I purchased a 2 post for my home garage. As stated above your concrete needs to be up to snuff I have 3 foot pilings under the post to cure any problems with the concrete and also had ten foot ceilings instead of 8 feet. I wished I had gone at least another foot or two. Got mine from Eagle in Greensboro NC $1600.00 installed myself. Good luck on your choice.