Going in to neuro next month to "get started on a med" (i.e. CRABs, etc)

I called my Medicare Advantage plan's patient advocate that is assigned to me. Nice lady, helpful. She said they don't approve copaxone or avonex unless I can't take others. So my choices are the others. Also learned the ins co "process" requires the neuro to get authorization first from my ins co (Anthem BC/BS Med Pref Premium PPO- Virginia plan). Also learned those of us with Medicare are now having tougher time getting drug companies provide drugs free/low cost due to the laws passed (thank you politicians & pharmaceutical companies...)

Seeking advise on pros/cons of the rest of drugs

Also how do any of you (at least who get Soc Sec and have an advantage plan) afford this stuff??? From what I have been digging up I may not even need to choose a drug- as I cant afford the "specialty tier" 33% copays!!!

sigh- just as I get ready to fight back this monster, I find I may be unarmed