I use my QT as a small nano display like Mike. I was able to have it setup in an hour or so with coral (do not try this at home). It's really easy to service, and looks like a little nano tank as opposed to a sterile egg-crate habitat, that way the little lady doesn't turn into a little monster.
Levi, if you want to go on the cheap, craigslist has tons of 10-20 gallon freshwater tanks for sale cheap. I got mine on there with a nice stand for $50, it came with a heater and a little penguin filter. I've since hung a Prism skimmer (free), a 70w halide, and a Koralia nano. However I just started with the penguin, a Mini-jet (fried my tank the day of the last swap), and some PC lighting. As long as you have some liverock, and I like to use some chaeto, your pretty much golden.