We have a Simultalk 24G wireless (1st gen. digital?) and have used it for 4-5 yrs. We used to use it on both our singles as well as the tandem. They're pretty nice in windy conditions and they allow you private conversations when riding in groups. The only time we use them now is on longer-, charity-, and tandem rallys these days. Intercomms are great for directional calls from my stoker-navigator-wife. The only real drawbacks are battery life (6-7 hrs steady-on), forgetting to cover the mike when talking real loud/yelling to other cyclists, and outside feedback (powerlines and the like). Corded is certainly a cheaper route and may have fewer issues than we have, but you have to remember to unplug. BTW, if you use our particular system riding single bikes, the line-of-sight range is about .3 miles. I'd expect similar performance for the other wireless set ups.