The watch I really want is the Pebble Time 2 with a black-and-white screen.

The Pebble Time 2 is a huge step up from the Pebble 2 Duo in almost every conceivable way, but the contrast ratio on the latter is so much better that I still wear the P2D instead of the PT2, and just resign myself to deal with the lower resolution screen and inferior build quality.