Edge 800, replaced the battery myself last year to bring it back to close to its original runtime. I do a lot of cold riding so I like that it doesn't have a capacitive touch screen. The map screen can be very difficult to read depending on the angle of the sun.
I tried a 1000 last year but returned it after 1 ride because I couldn't live with having to take my winter gloves off to do anything on it. When I eventually replace my 800 it will likely be with something that doesn't have a touch screen.