I started out using single and dual cylinder in-ground lifts, and when above-ground systems came along it was the best thing since sliced bread! I've used 2-post, 4-post and scissors lifts, and unless you're doing a lot of wheel alignment, the 2-post is the best idea. Check with your local commercial lift distributor- - -most of them will have slightly-used lifts they have repo'ed from shops that go out of business, and they are usually willing to sell and install them at a bargain price. For the hobby-type user, you don't need the latest and greatest thing on the market, just something that's safe and reliable.
Jerry