There isn't a listing of tablets that I'm aware of (probably because there are so many models and new ones are contantly being released), any tablet that meets the minimum system requirements should be able to run Photoshop Touch. I would suggest reading reviews about the top tablets online within your budget. Depending on the kind of art you will be producing and how you intend to use the tablet might be a factors to consider as well. The current apps available on Android will eventually be available on iOS (iPads) too which might be a consideration as well. I've personally done sketching with Adobe Ideas on the iPad and really enjoyed it. Pressure sensitivity is also an important feature for some artists which works with Lenovo Thinkpad and on Samsung tablets with stylus support. All this might raise more questions than answers....regardless, hope the info helps
I pulled up a list of tablets running the Android OS on Wikipedia, of those, eight met the requirements for Photoshop touch, and most were simmilar in size and price. I've chosen the Acer Iconia because while the rest of its specs are pretty much the same as all the other 10-inch Android tablets, it likes to boast specifically about its graphics card.