I’ve been using FLARM in a helicopter for a year now and now find it very comforting. The power FLARM portable shows everything that your Garmin shows AND gliders. I bought it just for gliders originally. FLARM aircraft show up very accurately, whereas the squitter aircraft have a slight (but critical) delay. This seems to be a rather fundamental flaw for VFR aircraft. It’s great if you are flying in a group as you can see where your company is - at that sort of range, only FLARM is accurate enough.
There is more about FLARM in helicopters on medium.com (search for FLARM there). As it’s a portable device, there is no installation- I just use a bit of Velcro.
I am interested to see what Pilot Aware is like as I haven’t tested it.