I bought some clear bags from Klingspor some years ago, they held up very well, went through a dozen or more empty cycles before I had any issues. I figured they were pretty cheap considering how long they lasted, but they're not as cheap as trash bags. I never really wanted to risk any trash bags, even doubles, due to the risk of blowing huge amounts of dust inside before I could shut down, that would be harder on lungs and clean up than the price of the bags on the pocket.