In the spirit of “I’ll recommend what I have….”
I have an Edge 1000 and it’s truly excellent in almost every way. Apart from, potentially in your case, battery life. More than enough for half day rides as I’ve found so far, but I suspect it might struggle with a big tour without a recharging facility on board. Will have to try it on a bigger ride sometime! Eeek!
However, in the plus side of the ledger;
Stunning screen, really easy to read and use in pretty much any weather.
Touch controls works brilliantly with almost any gloves I’ve tried so far
Easy to set up your own chosen profiles (What’s on which page, etc)
Fast. Really fast. Picks up satellites very quickly and rarely loses them and/or suffers speed changes as a result.