I have a Zaon unit connected to my 496 that gives pretty good information and is compact.
I generally fly airways everywhere but I am based on a private strip so spend a lot of time transiting from CAS back and forth to the strip. On IMC days where I get a cloud break for a VFR landing I rarely see any returns. The clear VMC days it is a bloodbath and it is surprising the number of returns that I get and never eyeball.
Same problem as with TCAS etc. I need everyone to have a TXPDR and mode C so even with technology assisting me I still need to look out the window and be sharp on my lookout.
A question that perhaps should be debated is that are we letting our guards down with see and avoid when we are under ATC than for example when we are at a busy A/G airfield like Leicester or Popham etc. and expecting a bloodbath?