I can guarantee that you'll find the Riseman band more comfortable. To me it's a big difference. In fact, CASIO abandoned the GW-9100 strap when producing the GW-9110, and switched to the Riseman design. If that's not a testimony to the superior band, I don't know what is. ;-)Thank you for the info on the band replacement. The majority of the wear is from me resting it while working at my computer, so it is not that noticeable. However, I may pick up a replacement band and see if it is indeed more comfortable.
I still like the look of the old Gulfman better. The new one looks a little too busy to be my everyday watch. Not saying that I have not looked at a watch with moon phase and tide graph for the future. It was just not this one.