Shadow Priest Weapon

I’m new to Shadow Priest and I plan on having my Priest at 120 by the start of season 2. As the first reward is a weapon, the question in my mind came to be is it better to use MH/OH or a Staff as a Shadow Priest? Thanks in advance.

Staff and hope you never gat a 1h drop. Any miniscule stat advantage for mh/oh is negated by the pain of trying to get two different drops with the right item level and stats. They should have used the artifact method where mh oh was tied together. I hate getting 1h drops. And wands even worse. Cant even tmog them. 1h isnt even an upgrade till you get an equal off hand.