I have a small wrist (just over 6" circumference) and was looking for simple, masculine watches between $100-$400 that're 40-41mm.
The Nixons, Hamiltons, and Lacos I like would all be too big for my wrist. Suggestions?
Sounds like you need a dressier watch. Check out Timezone and see what turns you on. The ones you mentioned are pretty similar to what you have, unless you're looking for a chronograph. I would def recommend looking at used market, much more bang for the buck.
The 8500 PO is a slightly larger movement so that, coupled with the skeleton case back, makes for a "bulkier" feeling watch. Most of the talking points as to why the 2500 is better than the 8500 come down to personal preference. I like how the 2500 PO looks over the 8500. The 8500 looks too busy, too thick and doesn't have the classic good looks of the first iteration. The reference of 2201.50.00 is a 2500 movement. If you know the serial # I can tell you whether it's a 2500C or a 2500D as there were minor changes in the movement mid-way through it's life.