I couldn't stand the legibility issue with GW-9400-1B (even on broad broad daylight!). Bought a positive display version GW-9400-1 yesterday. I'm happier now! Here's a picture of them next to each other
CASIO G-SHOCK RANGEMAN GW-9400 product video - YouTube
Casio G-SHOCK RANGEMAN Digital Black Out GW-9400-1B Solar – NAGI