Totally agree more pixels would be nice. However, I've discovered after several rides that (a) manual zoom (controlling it by using the +/- roundels in the corners of the map) is far superior for me in terms of reading the map at intersections/roundabouts, such as in the city where sometimes up to 6 streets are joining, and (b) the new fonts are much easier to read at a glance. I think Garmin have sufficiently tweaked the graphical user interface that despite the lower pixel count, the screen is plenty readable on a bike, on the move.

I really have no way to evaluate the solar feature efficacy, other than check at the end of a ride how much it has added to my time. Honestly, it’s not astounding, ~20% in sunny conditions? Friday I was out in mixed cloudy/rainy weather for just under 5 hours and the device claims it added ~45m battery life. Last Saturday, it was sunny, and on a 6 hour ride it added 1h31m. So brightness definitely matters, but even at optimal conditions, it won’t prevent the eventual complete drain of the battery.