I would side with the shocker on this one. I heard even the SP techs have trouble with the Nerve and that's no good in my book. At least shockers can be teched easilly enough when they go down... and they can go down, quite often. But it's still a much better buy then a nerve.
Dragon/Russian Legion/Ripper 3/Species/Vice Intimidators
Mirror's Edge/ Darq 7 / Red Edge
Silent Hill Cyborg