GBD-300

I have both the GBD-200 and -300, purchasing the 200 first. Found the 300 on eBay for a great price and picked it up. Since then, the 200 has done nothing but occupy a space in my Casio box. The round case just looks so much better to me.

I have the 300 because it was cheaper at the time, but I think in the dark colour the 200 looks better (the two tone doesn't work as well IMO)

I went for the third one. I wanted fitness tracking and the stainless steel bezel did it for me.

Unless you are swimming and surfing too, the GBD will be better. I was thinking of the GBX, but I went for the GBD because I didn’t want to constantly be reminded that I could be at the beach instead of work

I use a casio gshock smart watch to track my workouts. It's quite banged up now but it's designed to take hits.