Apologies in advance if the below post isn’t allowed. Not sure how to categorize this post as it’s not really a synth repair 
I’m looking to MIDI mod my Korg Poly 61. There aren’t too many MIDI mod kits available and I’m also trying to stay within a budget.
Right now, having MIDI on-off functionality (MIDI in) functionality would be sufficient for me so the below mod would work perfect:
However, I know I might regret later and therefore I’m also leaning toward
or
I was wondering if anyone has any experience with the above mods & sellers in terms of reliability?
I’d love to hear experiences from people who have any of the above mods installed.