I have a SteamFast, got from amazon. It works wonders, I just love how easy it is to use. My biggest problem with this is that the hanger bubbles a bit when you are steaming, maybe newer models have a solution for this. Also, you do need to clean it from time-to-time. Another consideration is that the size of the water tank usually dictates the price as well, the higher priced ones have a bigger water tank (as everything else being equal). I chose a small one.. I don't find myself steaming for more than 30 minute or so. Besides, I timed it, it really took less than 1 minute for it to steam up. I find it super useful to freshen up stuff in the morning/ at night for the outfit I was about to wear.
