Although I am a mechanical watch enthusiast, Seiko's G-Shock is the one mainstream quartz watch I respect and admire. I currently own two one having that iconic design which I used when working out at the gym, and the second being solar-powered and made with carbon fibre which I used when cycling. Both activities I would not dare used any mechanical watch I own, and bought well suited for the situation. But I think those would be the only one's I will ever own.