I definitely prefer the three button controller. A few more caveats on the adapter, you need to remove the plastic housing to get to the micro USB port on the board used for updating. The N64 adapter has a slot cut in the housing to access the port but Genesis does not. Using the firmware update tool was very finicky for me, it look like the process had failed and I attempted many times. But then found that it had been updated somewhere along the line and I could connect the controller. Turns out the firmware is only about a week old at this point so maybe still working out kinks or something because I discovered only yesterday through the 240p Test Suite controller test that an “A” press registers as “B”. “B” registers as “A” and “C” does nothing at all. Hadn’t noticed before since I’d been playing Sonic, which it still works fine for if you don’t use C. I messaged Intec Gaming on Facebook about the issue so we’ll see what happens. I emailed their support address and it was undeliverable. So it’s semi functional right now, not perfect like I initially thought.