One must not take these baits.
This "head down in the cockpit playing with the knobs" has been done to death.
If the ZAON directional unit could be mounted out of sight, I'd go for it too. Presumably it needs to have a direct view around, not obstructed by metal.
I looked into getting the full Ryan/Avidyne 600 system installed, a few times (£10-15k) but could not bring myself to have the plane taken apart over several weeks, with the relocation of most of the existing antennae and rewiring etc. Right now everything is working perfectly and I don't want to mess with it
