Got 800 and 1000.
Pros
Bigger screen
Maps for Europe
Connects to phone
Maps updated for free
Auto upload of activity wifi or phone
Has lots of navigation aids, like locations, local services without Internet
Overal I’m pleased with my 1000. I use it for long distance navigation and for that it’s perfect. 800 still in use but just to record MTB rides which it does very well. Depends what you use it for. Just used mine to go from Piisa to the Alps. Even used it to search and navigate to nearest restaurant when local one was closed. If you just use it to record stuff don’t bother to upgrade