For whatever reason, EERY pro door guy I talk to hates EZ-wind springs. But I none gave me an answer as to why. Just the typical "we just dont like em".
I had them on the 4 cheap doors I did on my last garage. Makes winding a spring cake. All it is, is a worm gear apparatus that you can use a hand drill and 7/16 bit and wind the spring. Takes about 1 minute per spring to go the 12.5 wraps that was needed on my old doors. And future adjustment is just as easy. Grab the drill and go a little ore one way or the other.
I certainly dont understan why "pro"s like winding with bars. ITs kinda like saying one prefers to drive nails with a hammer instead of with a nail gun.