I was close to trading my PRS-17Q but got talked out of it by forum members. When looking at alternatives there was nothing to compete for the same money. I took one members advice and put it on a hirsch liberty. Looks great and much prefer it over various natos althought the olive one does look good.
For beach/swimming I've got a "Sil-Tech' HD rubber" watchstrap which also looks quite good despite the low price
http://www.watchworx.co.uk/pages/lwb/pu.html