I bought these to replace the older cadencespeed sensor paired to my Garmin Edge 500. I had initial setup problems with the Edge not detecting the cadence sensor despite following instructions. Almost gave up but switched the Edge onoff a few times and suddenly it started working and has been trouble free in 2 months of operation. As with most Garmin electronics, price is too high for what it is IMO but I like not having the bulky chain stay sensor anymore. Took off one star for initial setup problems and being overpriced.
I use the mount to hold my Garmin Edge 810 and a Garmin Virb Elite. Everything fit perfectly. I don't worry about a plastic mount breaking. I would buy it again.
I went to the Edge 1000 from 800 mostly for its larger screen. I really enjoy most of the same screen displays as I previously had but also like the ride features in which you can switch to select indoor, race , training etc and can't wait to get out on the road to see the live segments on Strava to when a segment begins and ends. I couldn't do that with my 800. Although I have just been using this on the trainer since I bought it I know from others that I ride with tell me it does a lot more .
I really like this unit so far. It has a nice, compact size that blends nicely with the front of my bike, it picks up gps signals almost instantly and has been very reliable so far.
The mapping works well but don't buy this unit if you're big on mapping because it is simply too small. Go for the Edge 1000 instead.