CO2 Secondary Regulators

Looking to add low pressure secondary regulators to my system so I can dial in different settings for each keg. Postage costs are pretty hefty for anything from USA so hoping to find something local,

Only one I have found so far is a Micromatic from Brewshop

www.brewshop.co.nz/kegging/micromatic-secondary-regulator.html

Anyone had any experience with these