I have a Garmin 500 and love it. My BlackBerry Z10 has a cycling program on it that I down loaded but every time you stop for a break you have to remember to pause it or it keeps counting the time and your average speed is off. The Garmin 500 is a nice basic bike computer that has a ton of information it tracks. It also lets you set up five pages that you can scroll through and each page can hold up to 8 functions each. I have not had any problems with the GPS dropping on it. That is not to say it can't happen but I have not had that happen.