I was on it 3+ years, it did fine by me MS wise but too many side-effects for me.
Starting Avonex soon.
I'm glad Copaxone has been shown to do well, it seems the DMD with the least side-effects for a good many people.
Tysabri is also a DMD but not one of the original CRABs. They should have named is with something beginning with S so it could have been CRABS.
I remember all the nay-sayers on MSW putting Copaxone down, now I wonder what they will have to say.