Hi Lurchy22, and welcome back to the forum!
There are not a whole lot of us CRPS sufferers on here that have had much success with any of the SCS units. I decided to try the Nevro Senza out myself earlier this year, only to have an increase in pain, and a migration of symptoms going from my foot and ankle up through that same leg and starting down the other. If you are interested, you can read my post about it here
Going for SCS tomorrow. I do know that Catra121 is also getting ready to go in for her trial, but she is going in for a DRG stimulator instead. I really hope it works out well for her. She has so much going on with life right now, and it would be nice to see her have some positive results.
I hope you don't let my experience with the trial scare you away from moving forward with this. It is a great unit, and I just happened to be one of the few unlucky ones that it did not work for. I wish you the best no matter what decision you make. Let us know how it goes for you if you do go ahead with the permanent device.