  We consider simplified models for dark matter (DM) at the LHC, focused on
mono-Higgs, -Z, or -b produced in the final state. Our primary purpose is to
study the LHC reach of a relatively complete set of simplified models for these
final states, while comparing the reach of the mono-X DM search against direct
searches for the mediating particle. We find that direct searches for the
mediating particle, whether in di-jets, jets+MET, multi-b+MET, or di-boson+MET,
are usually stronger. We draw attention to the cases that the mono-X search is
strongest, which include regions of parameter space in inelastic DM, two Higgs
doublet, and squark mediated production models with a compressed spectrum.
