Well Toshi (member here) would be my first choice (budget dependant) - Toshi Straps
Edit: https://forum.tz-uk.com/showthread.p...ps-NOW-REDUCED
He has a few on sale on sc currently
Pav another member newer also makes lovely straps. - Neptune Straps.
I know RXW watches have their detractors but as far as I can see they are great quality and sought after.