Hi Watchismo,
Strap fit for me is really dependent on watch/ strap/ bracelet combinations, but that said, I can not have the fit be too tight. When I lean toward a snug fit it really feels bad when you move your hand or wrist around and that will make me.....well crazy. For me having the fit go toward the looser side without being sloppy, is my happy medium and I have a felling it stresses the straps and bracelets a little less. There are a lot of straps I will either open the hole a bit or add a hole to get a better fit.
Just my own personal 2 cents,
Mark V