I'm a fan of Swagelok's high-quality pressure regulators. Sometimes you can find NIB or new-old-stock units for under $100 on eBay. Some come with a an output gauge installed. Some have two gauge ports, one for input pressure and one for output pressure. Here's mine:

Had the CC regulator and it worked fine...I'll spare you the details but it got left at my last stop over. Followed Dick's lead on the Swagelok; found one on eBay for a relatively good deal a couple years ago. Can't say I can tell the difference; they both work. But there is something very sexy about that green knob and how silky it is to turn

holy cow!! this makes the CC pressure regulator looks like pennies..

https://www.ebay.com/itm/Swagelok-KPRAF ... SwxcJdwFqd

Here is another thread that describes the failure of the Holiday House regulator as replaced by a Watts 650.

Water pressure regulator malfunction update