this seems to be a thread between pass and dble, I thought it was going to be between dble and 4N
I would dble. I would imagine that when partner passes -1 and = are both fairly common. I would imagine the long term expectation is not that high in that respect, but if partner can bid, then your almost certainly onto a massive win with this hand.
xxx
xx
AKxxxx
xx
or something could be a double game swing.
EDIT: I didnt notice it was MP. In that case I think it its probably close to a pass. +200 would be a massive win, but you will get plenty of field protection in 4s-1 undoubled. Also, rho will have a better hand to raise the preempt normally at MP particularly are red vs green. I would still dble, but it feels close now.
The physics is theoretical, but the fun is real. - Sheldon Cooper