This thing looks like a beast. I have the first Odin, and it's a very competent device, but not a powerhouse. They basically threw all the specs at this one and made meaningful improvements to the rest of the hardware. I'm pretty excited to get one.
I play mostly handheld emulators on mine, with some other systems sprinkled in. Handhelds have always been my favorite systems, so it's lots of Pokemon, jrpgs on the Vita/psp, and whatever else games I missed growing up. If you want to buy one device that'll do everything, it seems like the Odin 2 is it. It really is awesome having a dedicated device for emulation.