Like Slamonchaser, we go through a ton of bags a year. I'm not partial to any brand, and buy 3 to 3.5mil bags off Amazon. I don't like the "laminated" type bags as the seal doesn't seem to last as long in them. I use rolls for making big bags of trim/fish that gets made into product, smoked, or big roasts. Otherwise 90% of my stuff goes into quart size bags, steaks, roasts, fillets, burger, etc. With food savers, the first thing that craps out is the heating/sealing bar. So making your own bags means the life of your sealer is cut in half on a per package count. The rolls really aren't really any cheaper, especially if you're like me and make the bag too big and have to trim it. The sealing bar is small, and eventually they will burn out.