Hey there, All4 and Welcome!....In my experience, people react differently to different meds. Even when they have the same form of arthritis. So it is hard to really say which one you'll get the most benefit out. In my honest opinion, someone who really understands the various medicines out there may get some clue to point you in the right direction by knowing that Enbrel is not helping you. I know with some (maybe all?) of the biologicals they say that combining it with something like methotrexate maximizes the benefits. You might want to ask about trying to add that with the Enbrel (or maybe someone here can pipe in that Enbrel does not work better with it) if you are getting some relief from it already.
Someone on another thread mentioned Rituxan (an IV drug) has less allergic side-effects than the other biologicals and is so far happier with it.
I have taken Arava but have recently stopped. It worked well, but in my case, I'm highly sensitve to these immuno-suppressing drugs and can't take them very long before my body has a severe reaction to them. While I was on it (to boost plaquenil) it helped immensely.
Good luck. Keep us posted.