Garmin’s technology is way better, maybe Shearwater has caught up?
Being unable to 100% confirm connectivity pre-dive because it uses different technology underwater vs above is far from ‘way better’ in my book. It’s actually a show stopper.
Garmin’s technology does transmit further underwater but I honestly don’t need that. What I need is absolute assurance that a paired transmitter on the boat is also paired underwater. Garmin fails on that front.