I can try to answer any questions, but it doesn't seem like the 8bitdo Ultimate software is availible for download yet. Im not big into mechanical keyboards, this is actually my first, so I don't have much direct comparison experience to other keyboards.
but the buttons are big and f u n.
And to add on, you can connect 4 of these big button controllers - it has four ports on the front of the keyboard for them. Why you would need this - no idea - but you CAN and I love it.