Summary: We are mountain bike riders and we use our Garmin Edge every time we ride. It's small and easy to mount to the bike. It does a great job finding and tracking satellites. They claim leading technology in this area and I believe it works from my experience. Garmin has improved their software with this unit over the years so that now the data is uploaded to the internet and you can view your ride graphically.
Summary: I went with the Edge 500 as some of the newer units are difficult to read in the sunlight. It is a bit tricky to find out how to change bikes but once you get it figured out, it is no big deal. The only thing keeping it from being a 5 star review is the 3 bike limitation. I have my road bike, play mountain bike, tandem, trainer bike and bikepacking bike. more bikes would make it a 5 star review.
Summary: this is my second edge having had many miles of pleasure and hassle-free service from the 200 - which I used in the US and S Africa without any issue. the 200 is by far the best value base GPS you can get. gets gps signal quickly, simple to use and well priced now. the 500 offers more features and what interested me was the heart rate monitor and editable display - which I hoped would result in bigger digit read-outs as I need reading glasses mostly.
Summary: I was going to purchase the Edge 800, but then I finally used some common sense and bought this instead. It doesn't have all the bells and whistles like the 800, but it has more than enough data fields for any advanced cyclist. I took away one star because the elevation algorithm that is used by this GPS is beyond screwy. One time, while I was down by the beach, it stated that I was actually -142 feet below sea level.
Summary: I like this computer very much. I use it with the speed/cadence sensor, and a heart rate monitor. All these things work great. The battery lasts for many hours and I have never had it die on me on a ride. The screen is readable, even in direct sunlight. The big issue I have with it is that if I set it to auto-pause when I am stopped, it will pause on and off while I climb steep hills.
Summary: I've used a Garmin Forerunner 320 until recently, and moved to the Edge for improved battery life. I like the auto pause feature. There is a lot you can do with the Edge that I haven't even tried yet!
Summary: The computer does what it needs to do. It records all the data you could possibly need, and much that many of us don't. Issues I've encountered: I wouldn't trust the heart rate monitor that was included to properly monitor the heart rate of a corpse. The new premium straps are a much needed improvement in comfort from the old hard plastic ones, but that doesn't matter if it doesn't work. It has ceased to work with any reliability with any head unit.
Summary: Previously I was using the app map my ride for tracking both my rides and average speed. Problem with that is that it drains your phone battery. Besides that, my phone is a Samsung Note 2, and now that I have started wearing riding cargo shorts. I have no place to put my phone. Yesterday was the first ride I did with it. The only reason you are seeing 4 stars is because I have bad eyes, and I was having a hard time reading the print on the sides of the buttons.
Summary: Just the fact that it can be recharged is a major boon and an escape from wireless units with impossible-to-change batteries. Once you master it, the menus are very easy and with many options to display the stuff you want. The download feature to the Garmin site works very well, although at times I find the site a little hard to navigate (specifically to edit my rides).