Rituxin, yes, I tried it, I had two infusions and they did not help my RA at all. Actually, I had bad flares after them. On the brite side, I didn't itch from a bug bite for nearly two years and my hair became an nice chocolate brown instead of all gray and I also ended up with a natural body curl.....better than any perm I ever had. I have failed, Enbrel, Kineret ( or something like that ) Sulfasalzine, Methotrexate, plaquenil, Rituxin maybe others I can't think of at the moment. I'm currently on Humira not sure that it will work much longer. I respond well with Prednisone, but once I got up to 20mg a day it made me hostile. (although I kind of enjoyed that probably a bit too much lol). Can't say I had a bad reaction to the Rituxin other than I felt extremely jittery for several days and very tired, no energy, that and it just didn't work and I flared bad and couldn't dress myself etc. This was three years ago.
Wishing you great success with whatever you choose to do.