I was diagnosed in 2005 and have been on Copaxone and Rebif with a change to Ocrevus this fall. You can use the little magnifying glass in the upper left to search for past discussions on most of the available DMTs. The two you have mentioned have had much discussion. While you are having an episode you may also be given a steroid infusion to shut down the impact quickly.
Sounds like you are lined up with good medical advice and this is a great forum to ask for personal experiences as you have- good luck! This is a global forum so you do have to watch that with responses as the same treatments aren’t available everywhere or universally preferred.