I have just returned from an appointment at the MS Clinic and was recommended I use a personal injector to help me give myself injections. Up until now I have been going to an injection clinic because I have trouble with the thought of injecting myself. When I was contacted by the group that was going to send me the injector they told me it is only compatible with the prefilled Avonex, I have always used the Avonex that you must mix yourself. Is this good switch? What are the experiences others have had with the prefilled Syringes.