The one I have is a Haier HUM013EA. It's a freezer only unit that I keep my stock of rats in and stands about 20" tall. I was worried initially that it wouldn't be enough room to hold everything, but for such a little box, it's surprisingly roomy inside. I got it on Amazon a month ago for $149 shipped and it's been worry free. Just make sure to leave it, or any fridge or freezer, standing upright for at least 24hrs before plugging it in so that the coolant can distribute itself properly after getting moved around during transport.
Eric