Don't feel sorry, Big lots has an awesome return policy, like Walmarts was 10 years ago. I just brought it back and got a new one

. I kinda expected it, I have had bad luck with android. Hince me getting a cheap one.
Still, the one I have now is "unbrickable". It has a dedicated usb mode, so even if the whole flash is corrupted and nothing can boot, I can just reinstall. Had 2 do that twice before I figured out how to get cyanogenmod to work, as I wanted google play.
Played Ocarina of Time and Majora's Mask just now, and they run full speed. I didn't even have to get them, as of course I already have them on the SD card. They are among the best games for N64.
So, you just want to make sure you have at least a 1ghz+ Armv7 and a Mali 400. Not exactly top of the line stuff

. Then I would look online to see if their is a cyanogenmod for it, or even just any info. My first 2 types had no info online, and so I was out of luck on anything. And also check if it can accept a usb gamepad/keyboard. It has to have support in the linux kernel to do it. Most Cyanogenmod's can, but I don't know about others.
I would also DL a free program called ES Task Manager. It lets you do alot of things, but a big thing is changing start up programs. Way to many dang app's want to start with the tablet. I don't need VLC to run on start up, or Crackle, or ComicRack, or bloody Youtube. So blacklist them.
And a program called Android tuner will let you OC your CPU, as well as change the governor.