Hey guys just wanted to report back on our findings of a test we conducted on the Scala Rider G4 and Sena SMH10. I was suspicious of all the marketing for these things and knew that they would not transmit the distances they claim in a suburban/urban environment where I have been using them.( So Cal) <object height="385" width="640"> <embed src="http://www.youtube.com/v/VxAA5njR7Wg?fs=1&hl=en_US&color1=0x3a3a3a&color2=0x999999" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" height="385" width="640"></object> Anyway. Our findings indicated that the maximum usable range of the Scala Rider G4 was around 1500 feet, and the Sena SMH10 was 1000 feet. The intercom sound quality of the Scala did drop off after 1100 feet, but was usable to around 1500 feet and dropped completely at 1550 feet. The Sena was clear up to the drop off point. The conditions of the test could be described as suburban, so the ranges might be longer in wide open terrain with no pedestrians or other potential interference. The overall sound quality of the Sena for both communication and music is better, so if those are your priorities I would consider that one. If bike-bike is your main thing the Scala is probably a little better for you. Hope this information is helpful for people making a decision between the two.