I know that you aren't actually going to get one, but...if you don't care about the hand tools (here we go...
), then
the one on the far right is a good choice. It's normally about $120 at Amazon, but I've seen it for $100 there. It's built off of the same platform as the other SteamVacs (which, ironically, don't use any steam or even heat the water). It just doesn't have the "clean surge" feature (which doesn't really do anything) or the internal plumbing for the hand tools.
The SteamVacs are a bit smaller than the MaxExtract models, but the MaxExtract did improve on convenience. The dirty water tanks are much easier to remove and install in the ME models, and the hand tools are infinitely easier to use on those models.