Garin Edge 305 with Heartrate Monitor - £199
GPS based unit for cyclists, complete with heartrate monitor or speed/cadence sensors.
Comments - A quality piece of kit that you don't hear much about... Price may put some people off. Download your post ride data(if you want to. can be viewed on the unit itself) to your pc and see where your hardwork took you. Good, clear graphs showing a range of data including heartrate, speed, distance, elevation, weather data etc. Transfer your data to the Motionbased.com website for further analysis and even use the map player function to watch an icon re-trace your route. You can even use a previous(identical) ride's data to track your route and see if you were quicker or slower over it.
Pros - Where do i start?.. Mobile phone sized GPS unit for your bike. Extra sensitive reciever to keep the signals even under tree cover! Good software for analyzing data!.. clear screen with adjustable contrast. Couple of mounting brackets for stem or handlebar!... Use the ghost rider function for training to set targets on screen showing you chasing another (ghost) rider and push yourself to the limit!
Cons - None yet, honestly! Price?