+1

I wonder about the durability of an iPhone on a bicycle. I carry my phone ... but for emergencies only. Just too much jarring around. The Garmin 500 is a real nifty device. It is also my first wireless ... and I will never go back. As Mr. Beanz says, there are three configurable screens available, but what he did not mention is that you can configure how many fields to display on each screen. My 500 is configured to only show the most important, basic information on the first screen. That way I have BIG numbers. Stuff like speed, cadence, heart rate, gradient, and (something else that I can't remember right now). On the second and third screens, I have little tiny windows that show just about everything that one could ever wonder about, including what time dinner will be ready, (just kidding on that one).

You can configure the 500 to work on three different bicycles also. But, you only get one remote transmitter per "kit". I have my Trek DuoTrap as one transmitter, the GSC-10 on another bike as the second transmitter, and for the third bike, I just have to go with NAVSTAR/GPS. With that, the only thing I'm missing is cadence.

The only other thing I could wish for is turn-by-turn directions. That's available in more expensive Garmin units, but don't think the cost is worth it. Haven't gotten lost yet ... well, did miss a turn on a double-metric century last summer. Just picked up the route several miles later.