@ascentale @skyfaller @bikenite A3.
We use the Sena Bikom20's and love them. They work well for quite a distance. Really good noise cancellation for the wind unless it's extremely strong.They're even pretty good going around corners and bends, but going around corners where there are buildings will, of course block the transmission. They were quite expensive, but when we had a few issues, tech support was extremely good and helpful in sorting out what might be the problem. We only bike the two of us, so I don't know how well they work with groups of people, but apparently they're supposed to do very well. They clip to the helmet strap, with the only issue we've encountered so far being that we've each lost one of the wind noise foams. Although they come with spares, I can see those won't be enough, and they're impossible to buy as replacements within Canada. When we called support in the USA, they actually sent us two replacements. I would have actually liked to have bought more. But that wasn't an option. Now that we're aware that this can happen, we take extra care.
They are really lightweight at 20 GM.
You can listen to music with them, but of course it's not great, as it's only one ear. That's fine for podcasts or audiobooks.
They charge quickly and last for up to 8 hours.
We'd but them again.
More info here:
https://www.sena.com/product/bikom-20/I hope this helps.