[Lion of High Park]

I completely agree. The null space cannons are VERY good. I tend to research up DUCs and capital ship missiles as my early game weapons, and then switch to a combination of phased polaron beams and null-space cannons as my main mid game weapons. The PPB weapons still have the edge, given the higher rate of fire than NSC's (until everyone starts using advanced shields, anyways). So on larger ship hulls, I tend to use one or two large/heavy mount NSCs, augmented with the PPBs.