I'd go for the bullet, only because it uses an actual Beckett foamhead, as opposed to the AquaC "spray induction" method. Both work well, but the Beckett is a far more proven technology.
If you are spending this much on a skimmer, consider throwing in a few more bucks and look at the Euro Reef, particularly the recirculating skimmers. The thing I don't like about Beckett, Downdraft, or induction skimmers is that they require a comparatively large pump to operate efficiently as they require lots of head pressure. Don't get me wrong though, the PM will be a great skimmer.