Quick update about the controls and the sdcard
Good news: no problems with overlapping buttons like with the s5100. Running and jumping in super mario is no problem.
Badish news: I downloaded and installed the key assign application and the nubs have no assigned values (but the d-pad does?) The nubs do work with a few select games that came installed on the device so it is possible to get them working. On the official website's forum for this device, there is a "key mapping zone" section in which I have seen some talk about custom key mapping, so I am not sure if there is a solution there or not (need more time to investigate). You can find the forum here.. http://bbs.much3g.com/forum.php?mod=forumdisplay&fid=62
Bad News: The knuckleheads who designed this device decided to make the right face button (circle on psx controller) the same value as back! it isn't a huge problem except for fpse which uses the back button to bring up the menu. Not sure if this is some kind of software issue or a hardware issue. Also, I got the Wi-Fi version and there is an SD card slot. When I put my card in the slot, an icon appears at the top, but I cannot find the sdcard when file browsing. (mnt/sdcard/) instead it brings up the internal storage? In the options menu, there is no mount/unmount sdcard option, it only shows the internal storage. So maybe this is a firmware problem?
Great News: All emulators seem to work great (even n64 and psx). Will go into more detail later.
Will post more updates later.