I had the Medtronics SCS implanted in August of 2018. The trial went very well, probably a pain reduction of between 60 to 70%. The actual implanted device did not provide quite as much relief as the trial, perhaps 50%. But, along with my pain meds, I was able to resume most of my normal daily activities, including cycling and gentle skiing. Then a bunch of the electrodes of the paddle burned out and the relief stopped. Tried Nevro trial, but they couldn't get the trial electrode under the implanted paddle. So, I can only comment on the Medtronics unit. I would give it a B+.