The Singularity (s192k) looks really cool, and has the Nvidia Shield Tablet chipset. The handheld clearly seemed to be a response to the Nvidia Shield Portable. I own 2 of those. One currently needs a hardware repair, the other needs a firmware reflash. But I love the Shield Portable. Best handheld of its kind. Absolutely amazing for emulation, along with Nvidia's spot-on built in mapper, for touch Android games that aren't friendly with gamepad controls.
The problem with the s192k, from my reading are things like dead pixels being common, and some other common hardware faults. Almost everybody who has reviewed one has said it feels really sturdy though. With its chipset, and controls, it certainly seems very solid for emulation and other droid gaming. Minus Nvidia's gamepad mapper unfortunately. I'd like to take a chance and pick one up someday. Too bad the price is still so high, and it's such a risk to buy one.