I'm looking to buy a smallish light tent (1 or 2 feet on a side) and there seems to be quite an array of options. Are there any that are any better than any others? Or should I just go with whatever is cheapest? I used to go to the local photo store and look at this kind of thing, but it closed a couple of months ago :(
I would recommend building one yourself, I followed Bill Hubers' instructions on PBase last year to photograph Jewelry and the results were amazing. One recommendation I took was to not fasten the legs or cross beams, by doing so it is easily collapsible for transport. You can then also make interchangeable beams for additional box sizes as required.
I would go with whatever the least expensive option is with the features and size that you want (e.g. interchangeable backgrounds, easy collapse, interior hooks, etc.). A light box is a pretty simple device and you can also easily make them yourself, you just require a reasonably rigid frame, some light white fabric for diffusion, and something like bristol board for the backdrop. There are a ton of examples on the web on how to do that and they work just fine though they don't shout "professional" if you're doing the photography for someone else.
Either way, unless you have really special requirements for it, I doubt that you'd find much difference in any of the options out there in practice.