I am purchasing one off of the internet as I refuse to have my insurance company dictate how long they will pay for it. If you look up TENS units, you will see that there are tons of options for not only the amount of stim, but the number of electrodes (mine can hold eight), and the programs it can do. I keep thinking that it's worth a try to get back to work without being on anyting narcotic. I also am now really scared of any surgical procedure, so I am holding SCS as a very very last resort. Hey, I figure this is non-invasive and I can play with it to try and get some relief.
I'm thinking that the number of electrodes might be the key for multiple sites, so searching that way might be an option.