Nate Pearson wrote:
Either one of these is a good choice: $35.31 Garmin GSC 10 Speed/Cadence sensor
http://www.amazon.com/gp/product/B000BFNOT8
$39.99 Wahoo Fitness Premium Speed and Cadence Sensor
http://www.wahoofitness.com/...ence-Bike-Sensor.asp
The 305 would be considered a "head unit". You computer becomes a head unit when you use TrainerRoad, so no need for the 305. We connect directly to the sensors.
Ah hah. I get it. That makes sense. Cool - I already own the Garmin GSC sensor. Will be giving TrainerRoad a try later. Great concept - hope it works out for you guys (as well as myself!)