Still seems like too much hassle when the Autocom still works fine?
I sort of agree (which is why I've still got an Autocom) but the Nav 5 is bluetooth only, which means an adaptor to get it to talk to the Autocom - and the Autocom BT adaptor I have on my Logic system is really poor (not sure about the SPA system). I seem to get through headset leads and/or looms on a regular basis, so that I carry spares when touring and the lure of bluetooth is getting stronger as the kit gets better.
more and more people want to add various gadgets on to there bikes. It's not as if we are talking about lightweight sports bikes 
