2 Handed (Tstaff) v. 1 Handed (AC/SOS) for Monk

[mefdinkins]

Hello,

I have a Peacebringer and 2 Jade Maces on my monk and I have been primarily using the PB for the last few levels. I'm just hitting 34 and I'm wondering when one handers become better than 2 handers?

I have pretty much given up on the dream of having a fungi tunic (until much later) but I am saving up and I could possibly afford a T-Staff or a AC/Stave of Shielding combo soon. I was just wondering what one I should shoot for?