It's a scary predicament I find myself. I think I should go on something to stop progression but am unsure of which one. And all this research is giving me a headache- and I usually have them anyway!
This is a situation that many MS patients find themselves. Some, like yourself, spend the time and energy to do as much research as possible before deciding what direction to go.
Many MS patients leave everything up to their doctor and depending on the doc's experience and retlationship with the drug companies, one could get pushed in the wrong direction for his/her situation.
I'm going to agree with Cheer in that something like Tysabri is over-prescribing for first line treatment.
Whatever your decision, you have to feel comfortable with it and don't allow the doc to push you into something that you don't feel right.