I also have a SCS and have had it for about 4 years now. I also do take 3 other medications to help with the pain. I have a couple comments.
1. Everyone is different. You could have a very good experience with a SCS. Someone just wrote that they are only good for 3 years and then you're back to square 1. No, not necessarily. That's just one experience. There are many out there and there are positive experiences too. Not just negative.
2. Explore all options. Try other meds in conjunction with the gabapentin. Lyrica, Cymbalta, orphenadrine, venlafaxine, the list goes on and on. Many different options out there with varying side affects.
3. Get a second opinion. Get a third opinion if needed.
4. There isn't a cure-all out there. It's finding what works for you but also to remember that nothing will take away all of the pain.

I've had a very good experience with a SCS. I also work full-time, corporate environment and am successful. I do know that I wouldn't be able to function without it.

Good luck on finding what works for you. Patience is hard but it's worth it to stay working and moving.