I use this style of bag because I'm a guide dog handler and need a conveniently sized, easily dispensed, plentiful supply of bags that I can easily carry with me around town or across the country.
This is the first time I've had the bags with this particular material, and I really like it. I have yet to have a bag tare when pulling it from my leash dispenser or picking up. The bags also open much more easily than some I've tried in the past. The material is slightly softer and clingier than some bags I've used in the past that simply slip through your fingers as you try to open them. I wasn't expecting this and it's been a pleasant surprise.
I haven't had any issues with size or durability either, and I'm picking up after an 80 lb. Labrador retriever.
While I'm sure the environmental footprint isn't perfect, I certainly feel better, and assume I'm doing better, than using plastic produce bags like I did back in the day.