My RSD seems to be more moderate than most, but here's what I use:
Lyrica 600mg a day
amitriptyline 50 mg day - very cheap but my doc says its one of the most effective medications. Unfortunately I can't tell you which is better since I started taking them both around the same time but together they both improved things dramatically. Also a 5-day tapered dose of prednisone was helpful, especially at decreasing edema and increasing flexibility, although long term use is supposed to be risky.