IT is one of the least prescribed, Daphne...it also has one of the largest needles...are you needlephobic?

However, because it was one of the first on the market, it actually has the most amount of documented history of working...nothing else has been out as long. I know of people who still use it and love it...its a once a week shot, but it is intra-muscluar which hurts more than sub-cutaneous.
Any drug, is better than NO drug, in my opinoin. I know there are quite a few people here who are handling their MS holistically, and I respect that. I really do, however, for me, making sure that I do not progress is the only thing in the world I care about...so taking anything which is proven, not suggested, is my first concern.
Betaseron is as good a choice as any...you have to make a personal decision. I would say research it as much as you can...many of the drug companies (including Bayer) will be happy to send you information regarding their products...theres tons of ways to get information....asking here was a good start.
Here are some questions to ask yourself:
DO you prefer intra-muscluar to sub-cutaneous?
Would you prefer an intereferon to Copaxone? The side effects are completely different.
How often is injecting going to work for you? For some, 3 times a week keeps the medicine at a level dose- eliminating the "need my drug feeling" on the 6th day others handle once a week just fine, and prefer it over 3 times a week..
and lastly,
Hows your insurance with all this? Hate to bring it up, but some of these drugs are 1200$ a month, some are 2200$ a month and of course when you get into Tysabri, its even more expensive....so, do you have limits with your insurance?
Good luck to you...let us know what you decide..
Nikki