I have both Sena 5's and Sena 10's... They're great units, and I've found them to be bulletproof. However, the only caveat when you upgrade the firmware (that I've found), is that you need to do a factory reset *after* upgrading the firmware, and then reset any special options, and re-pair them. After that they're flawless...
2017 Pearl White 650[/B]
AdventureTech lowering links and GPS mount
AdventureTech +2" SS braided brake line
GPI spools, SW Motech risers
Givi XS307 Tanklock bag and Givi 46L top case
Suzuki hard case saddlebags