Tysabri has been recommended for "relapsing" forms, so it can be used for RRMS. However, prescription guidelines, and I imagine insurance guidelines, say you must have failed on the current disease modifying drugs...at least that is how they're starting the reintroduction.
I do fine on Betaseron, so I know I wouldn't qualify.
Best of luck to you. I've heard some amazing things from folks who took Tysabri during the trials.
Like you, I know folks who experienced Tysabri firsthand. Also, I had the opportunity to watch the webcast of the FDA advisory panel meeting last March during which the panel unanimously recommended Tysabri be brought back.
If anyone has any doubts about this drug's effectiveness, I suggest they read the transcripts from the dozens of Tysabri patients who testified at that meeting. ( The meeting had to be extended an extra day to accomodate the many who wanted to testify.)
Here's the PDF file from that day's meeting. Patient testimony starts on page 232.
http://www.fda.gov/ohrms/dockets/ac/06/transcripts/2006-4208T1.pdf