I’ve found the Davis bell boots to be the sturdiest velcro bell boots that I’ve used. For turnout I get obnoxious colors–neon orange, sparkly hot pink, etc, because it’s so much easier to find them when they inevitably remove them. That and they never grow legs at a boarding barn.
That said, any of my horses who have been in 24/7 turnout and in need of bell boots, I keep them in the KL Select pull-ons. My current pair are 3 years old and still going strong. There is a trick to getting them off, but once you figure it out, it’s really not bad. I will say I kept my mare in velcro ones during show season, but from October-May, she was in the pull-ons.