My neurologist told me to pick one, too - I would have liked a little more guidance, but really the relapse rate is the same for all four of the CRAB drugs. (
Copaxone, Rebif, Avonex, and Betaseron.) I started on
Copaxone, because it didn't have a flu-like reaction, but had to switch to Betaseron after two and a half years because of side effects. Betaseron requires a blood test every six months to make sure your liver is working.