I've got an Edge Explore. Haven't had it very long. Not really made friends with it. I think it can do techy things that are beyond my comprehension. There's a thread about it somewhere.
I have one of those - it was great at first but is becoming less and less reliable. I would summarise as follows:
Pros
Big and clear screen
Generally reliable navigation
Relatively cheap
Cons
Battery save mode frequently causes it to crash
Battery indicator shows 100% when it's not full and 0% when it's not empty
Battery life (as far as I can tell, noting the above) is quite poor and it's slow to charge from a powerbank
Routes 300km+ seem to upset it.
For day rides and touring it's pretty good, but was exceptionally frustrating on longer audaxes this year. On the Bryan Chapman, it sent me in completely the wrong direction, in the middle of the night. Then it crashed, leaving me to navigate by phone and routesheet.