Wow, I didn't know this handheld existed. I was tempted to get one for a few minutes. After doing some research I realized Mame is not available for it. Playing Ms. Pac-Man is one of the main reasons I am getting a Wiz. Furthermore, I don't know if any more emulators would be available for the A320, and the Wiz has a much larger user community. I'm hoping we will get in time a good Atari 2600 emulator. Plus the Wiz supposedly has a better screen.
Craig is in talks with the factory and plans to place an order for the A320 and hopes to keep them in stock and supported for quite a while. Since it has a free SDK, it is only a mater of time before other emulators (including MAME) are ported to it. Compared to the Wiz, the processor is in the same general ballpark (totally different architecture, but similarly capable). Unfortunately the A320 lacks hardware 3D acceleration, so it won't do as well as the Wiz for things like Quake. Still, for half the price, the trade-offs are few and reasonable. If I end up getting something to supplement my Pandora, it will be an A320.