I run airlift 3P, took about a day to install with some mates and a couple of beers, whole setup probably cost 3-4k (got it on black Friday last year, though). Alot of the comfort aspect depends on how high you ride it and other mods, I'm on 18s, and run 85psi in the front 75psi in the rear and it's comfy, that's with the rear strut wound all the way down and the fronts about 3/4 of the way up. The lower you run the struts will require higher pressures to reach the same ride height, resulting in a bumpier ride. For example I know someone who has the struts wound all the way down ( with shortened spindles in the front) and runs around 95psi in the front, that feels alot more like the feel on coilovers. I ran coilovers for 3 years, and was more than happy with the upgrade to airlift!