[ I get a very stiff neck and I have shooting nerve pain down my arms.]

What kind of work or other activities have you done?
Repetitive, lots of desk work or phone tucked shoulder to ear?
Any previous whiplash, or sports injury?

Chiros or PTs do or mention any top rib mobilizations, trigger point, deep tissue release for what sounds like muscles spasms?
Did they evaluate your posture at all, is head/shoulders forward of the body, or rolled, hunched?

these might be helpful -
http://neurotalk.psychcentral.com/thread125577.html
http://neurotalk.psychcentral.com/thread84.html