I have a couple old military collapsing tri-fold shovels....but after I smashed a finger once, I wanted something less adjustable too...and bought the Cold Steel one. Which seems bullet proof and plenty durable.
Someday I'll have one in every car all the time...neatly stored away ..just in case.
Have always thought the military surplas collapsing type stuff would be more durable than the commercial versions .. but have not actually layed my hands on every type of commercial shovel available ...but some are flimsy...which is how I just defaulted to getting the Cold Steel one.
One my stash of stuff gets too big though I start looking again for ways to shrink the size and weight.
Maybe one day someone will make a folding titanium shovel !!