A rack model makes more sense than a odd shaped stand alone units like Qu-Pac or Qu-SB.
It saves time, router + wireless gear etc can stay in the same rack.
I operate a B*** X32 Rack and it has a really nice feature: it doubles as a stagebox, with is good for several reasons (good value, redundancy etc).
A rack model with 24/12 ins/outs would be great. 32/16 would be awesome.