Absolutely love!
I bought a set of M6S controllers for my Switch after reading reviews online and I'm so glad I did! They are wider and more ergonomic than the standard joycons, and the action of the buttons and joysticks is better than stock in my opinion. They were also very affordable and shipped quickly, and the company has been great to deal with. I've recommended them to friends, and I'm thinking of getting a case and a charging grip next.