Edit for previous post, the 45mm are in my second helmet......
From having the original Cardo speakers to the original JBL's to the upgrade 45mm has made a difference in the bass and the clarity in both JBL sets
I have the 45mm in the full face Shoei, which doesn't get used much and the supplied 40mm with the edge in the much used Shark. I should swap them around but the thought of x2 inner lining removals / re-fittings is something I need to build up to
I wear filtered earplugs, the type you can hear speech, music etc, but cut the wind noise. At a standstill, listening to music via Spotify, it is excellent. When moving, with the flip up and over, it is still very good, especially the volume increase as outside noise increases. Can't have the cardo at full volume even with the plugs in
The 40mm supplied with the Edge are very good
You get some more audio tweaks via the app
The radio function is either crap or can't work it properly
Phone calls are clear and people aren't aware I am on the bike even with the chin bar open
I went from Packtalk to Edge earlier this year and I'm sure the audio quality increased. Better bluetooth with the Edge
With the Packtalk, if I walked around the bike the connection was lost, sometimes even turning my head to the left (unit is on left side) would make the connection falter
With the Edge, I can get back into the house and halfway down the hall with the bike on the drive before the connection starts to get lost
The magnetic connection is very good once you get used to the release, and 3000 miles later, it hasn't fallen off (hope that's not the kiss of death)
The other consideration is that the Cardo is fully waterproof. The battery is the weak point for me, 2 Packtalks have lost battery capacity over 3 years each as they get used a lot. The Edge now has 3 years warranty
https://www.pama.com/cardo/faq/