i wouldn't exclude any of the ones you have framewise, all are incredibly strong, really frames come down to preference and what your willing to learn to play. all are viable. all have thier own special bonuses, oberon for example buffing ally damage up to 3x. Just pick up whatever you find interesting man, you can get whatever you want if you put some time towards it.
Oberon buffs damage? Wut? You mean Rhino?
You can try out new frame. He is pretty OP
And from the weapons, try Destreza for melee, i like it a lot, has finisher damage in combo. And for primaries sybaris is very good. But we'll get Dex Sybaris soon, so don't build it yet )