Motorcycle Helmet Intercom Review Cardo vs Sena Order your Parts from Rocky Mountain ATV/MC using this link to support DBC https://www.rockymountainatvmc.com/l/Dirt-Bike-Channel?ref=1017 After using both of these products for more than a year, it's time to do a spotlight and review of the Cardo PackTalk Bold system and the Sena 20S EVO. Hopefully Sena made updates to the newer models and they work better than the one that I spent money on and had instant buyers remorse that never faded. Get the