Seeking wisdom from those who have installed a lift

Any thoughts on a 4 post lift? I know that it's not as convenient but it would simplify things if your floor is not up to the standard. I have a 2 post in my garage and I am really happy with it, but my brother has a couple of 4 post lifts that he has been doing restoration work on for years now. There are some things that are much easier on the 2 post, but certainly still doable on a 4 post. Just my .02.