Either will work, the question is how fast do you want the lift to go up? Either way you are going to need a minimum of 15amp or 20amp dedicated circuit. You can get a higher HP motor using 220v and the lift will go up faster. I am going thru the same decision process. The smaller HP 110v lifts take about 120 seconds to go from bottom to top. The larger HP 220v lifts take about 45 seconds. It is back to the old addage... speed costs.I'm in the process of researching a new 4 post lift for my house (that by itself is confusing!) But I am not sure I should consider 110v motor or 220v.
I only have 110v in the garage.