The medications differ on side effects as far as each person...

The neurontin has helped me with burning pain/ allodynia. Only side effect I had was dizziness at first (many do say they have problems with weight gain, fogginess, irritability, etc).
The amitriptyline helped me sleep. It also helps with depression.
The percocet made me very sleepy, disoriented and foggy. But did help with the pain!

I know that the doses on the neurontin and amitriptyline are quite low, so if you see no relief from them, they can still be increased a bit (though some people do well/ better with lower doses- you only know by trying)! I am currently on 2700 mg of neurontin (I believe the highest the Drs. will use is 3600 mg), and 125 mg of amitriptyline (which is still quite a low dose).

As far as the spinal cord stimulator you can go to google and look up "spinal cord stimulator". Or visit these sites:
http://www.medtronic.com/neuro/paint...imulation.html
http://www.controlyourpain.com/index.cfm?langid=1
https://www.ans-medical.com/patient/.../questions.cfm
http://www.spineuniverse.com/display...ticle1980.html

I would suggest asking other RSDers about their SCS/ how it helped them.

I hope I helped you in some way! Sending many gentle hugs