I think both are beasts if the world was right......but it's not!
Sure, Boldin wants out but Boldin is not much for crying like a baby and he is still going to be a monster this year in a high powered offense! Boldin also is a good chunk better if both are fine but it's not and you seemed to answer your own question!
I wouldn't go to the extent of saying to stay away from all Broncos but definately stay away from Marshall. I would still take Orton and definately take Royal (he should go off this year with or without Marshall)
But......like you said, Marshall is a head case and a half and who knows if he will even play this year or play right!
I would take Boldin in a heartbeat and let someone else deal with Marshall's antics!
Standard H2H 12 Team 1 Pt PPR, Start 1QB, 2RB, 2WR, 1 FLEX (RB/WR/TE), 1TE, 1K, 1 DEF