No torn bags (yet) with my Eureka Commercial vac... it takes LS bags, which are very sturdy.
I did once tear a bag in my big Rigid stainless shop vac. I think the problem was that I checked the bag mid-way, maybe while the vac was on, and put the lid back on crooked or something. It was just redwood chips (I had it connected to a table saw) and there was also a HEPA filter in there as well. Easy clean-up.
So don't peek at the bag while the vac is running... ;-)
