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
Vintage casio G-Shock dw 9400 1680 | eBay
BUY Casio G-Shock Rangeman Solar Multiband 6 GW-9400-1B - Buy Watches Online | CASIO Red Deer Watches