PT - there is a very long, but very informative discussion on this topic here:
https://forums.flyer.co.uk/viewtopic.php?f=1&t=104016 The main issue (as I'm sure you've worked out) is that the current different conspicuity solutions are by no means mutually compatible. So where FLARM/PAW/etc units may make many similarly equipped aircraft visible to you, they may not make you visible to them.
After much reading, I invested in a PilotAware Rosetta for my Hughes 269 which seems to me to deliver the best answer at the moment. There is a view that the SkyEcho unit may be even better, once they can overcome some hurdles that you will read about on that thread.
Suggest a strong cup of coffee before you embark on reading it...