I have quite a few PC gameport gamepads and joysticks which really have made my 5200 experience a lot of fun. Bohoki's $12 adapter may lack aesthetics, but it is really awesome for using many of my gameport controllers in my collection on my 5200 (though not all are compatible).
I have read your Spinner guide and greatly appreciated the thoroughness of it all. Great job! I liked how you included info from my 2012 article and video (and it's funny that you recognized me!)- and I'm thinking I can get you an X-Connection just for being a cool guy

One more thing- I have an upcoming video which pertains to a PS1 wheel controller called the DOC'S Racing Controller. It has a JogCon mode, a NeGcon, as well as an analog stick mode (which is basically a spinner mode). Are you aware that DOC'S made this controller? I'll be showing it being used to play Tempest X...