Originally Posted by Bradleykd

I have a cycleops Joule GPS that works great. I can't comment on the accuracy of the altitude because I only use it as a display on the bike while using my garmin 920xt watch for all of my data. I'm a tri geek. I will say, that the PowerAgent software has a lot of data on it, and would seem to be pretty user friendly with frequent use. I just rarely upload the data from the Joule. Speed, cadence, distance, and grade all seem to match what the garmin says at the same times. I got mine on ebay for $60. Turns out, seller didn't reveal that it had a bad battery that wouldn't hold a charge for more than an hour. I called cycleops and told them the situation, requesting to buy a replacement battery. They said no problem and sent me a brand new unit for free and paid return shipping for the defective piece once I received the new one. I was on hold for about 2 minutes and the service staff was super friendly about the whole deal.