I’ve had two... “No Freeze” Faucets freeze and burst... the problem was, whoever installed them did not, as Billshack above suggested, slop the line, in fact one had a slight neg. slope... when you put them in, a 3, 4 or even 5 degree slope is a must.
I have a cabin in Utah that was plagued with busted water pipes every winter... finally two years ago, I ripped all the copper out and replaced with PEX... Best decision I ever made! Took me at most, a whole week, working at a leisurely pace, mostly by myself, with an occasional help from my wife when I couldn’t be at both ends of a run at the same time. Every individual line has a shut-off ball valve, so I can isolate each circuit. I put in drain ports at all critical locations, so now when I shut down at the end of the season, I turn the water off at the main State connection open all the drain ports, turn on all faucets, and walk away... haven’t had a busted water pipe since! And the great part of using PEX, it has a expansion factor of 5% or something like that... even if there is a little water trapped in a line, it can freeze and not ruptured the tubing. I did run Red and Blue to distinguish Hot and Cold... the price was the same, and I know at an instant what I’m looking at.
As for “shark bite’s” I personally don’t like them, I feel over an extended period the rubber “seal” is going to fail and leak... and I would NEVER install one inside a wall. Just my opinion, you do as you please.
But Copper vs. PEX... in my opinion there is no comparison... I’ll never again, have Copper plumbing in a dwelling I own.