I finally “pulled the trigger” (pun intended) and bought this pair. They fit my Xbox One original and One S controllers perfectly. The grip on these things is a MAJOR upgrade to the One S controller’s grip. The switches that toggle from full trigger to half trigger are high quality and don’t feel cheap in the least.
https://www.amazon.com/Bionik-Quickshot-for-Xbox-One/dp/B01N1QO0TS

