all my collars came from tejas and i had them now for about 6 years. they show wear, but still work great.
on vests, my 2 strike dogs wear bay head and go to the end of the rib cage. they are lighter and real flexible, but still offer good protection.
i also use x-treme outdoors long length vest which are 3 layers and covers the flank area and a tejas vest i use on my 40 lb. pit catch dog. the tejas vest is 4 yrs old and in great shape. lots of cuts, but none go all the way through.
Really like those homemade strap collars. great idea!