My son who rides a 650 Wee Strom and I got the Q2's over a year ago, primarily to use as bike to bike conversations on our semi annual week long expeditions. We really enjoyed the ability to carry on short conversations about road conditions, having to stop to pee, looking for a good place to stop to eat, etc and they even added a degree of safety such as when I spotted a deer coming our way from a farm field and I gave warning to my son. Additional features I came to enjoy was tuning the FM receiver to the FM output of my Sirius radio and linking my Garmin's bluetooth and my bluetooth phone to my headset. One one trip coming back from Texas, we changed our route when I got info from the weather channel that there were severe storms and tornado warnings ahead near Dallas, our intended route. This allowed us to reroute and avoid that hazardous situation. Any of these features can be turned off when you are in technical situations, but when we normally travel 500 miles or so a day, most of it isn't that technical.
We have since upgraded to the G4's mentioned in this review and they have some significant improvements. They are stereo and the volume is better. We both wear earplugs and have no trouble hearing. The AGC turns up the volume per ambient noise and the VOX feature means you do not have to press a button to make a call. An important improvement is that the cord for the charger has a USB plug on it so you can plug the G4 into your PC and check Cardo's website for updates. Cardo has been very good at listening to feedback and making changes that can be downloaded free. BTW, they just came out with an update this week and it addressed an issue I talked to them about at the Indy show. I had some problems with the VOX not being sensitive enough in some situations and now you can choose three sensitivity settings for VOX and also for AGC.
I know that some are concerned with devces such as this being a distraction and as with anything, they can be. Heck, your speedo and tach can be distractions if you stare at them all the time. On the other hand, the Cardo has added to our safety in some situations, such as the deer incident previously mentioned, a road hazard, or even a missed turn. If I am following a route from my GPS, I don't have to keep looking at it to see where the next turn is. Instead the nice lady announces upcoming turns in my ear. In addition, when I am riding down a long boring road, it is nice to listen to some tunes, latest news, etc.
Not everybody's cup of tee, but it works for me. By the way, I am a guy who has resisted new fangled technology in the past, saying I would never need something such as that. For instance I never thought I would ever have a cell phone, after all who the heck would I call? GPS? why I have lots of fine paper maps. Anyway, I usually weaken and join the rest of the world and find out that I am now hooked. ;D