Sunfish - what I like about the Dynon ADSB IN is that it not only shows a ‘target’ is it also displays what height it’s above & below, what direction it’s moving in relation to you & if it’s climbing & descending, with arrows & some numbers on the display. On top of that it shows the call sign (N number in USA) eg ABC, how cool is that ? In my case I want to know what the ‘target’ is doing, not that it’s just there. That situational awareness is something I’m prepared to pay for, YMMV. Low cost units normally don’t do that.
Here our CASA & Airservices are, & have been, working on a lower cost solution (just published again in their newsletter in the last 2 weeks) for VFR ops however I’m betting they’ll make it mandatory figment (& maybe transponders too) for ALL aircraft - in my mind it doesn’t make sense to have exemptions, as we do for Transponders here, for some aircraft & not others. This is paragraph is just a basic layout of the situation as it stands right now.