I have used the Force Flex series for years, Force Flex Protection to be exact.  We buy them by the box of 110 and recently the bags started were splitting at the seams every time you put it in the can which impacted the drawstring.  I thought it was just a bad batch and now we are on box number two and it is still happening. It also doesn't flex all that well and we have stuff push through the sides quite often. We have used the same can for 14+ years so that is not the problem.  We are giving up on these bags and will be finding a new company.