Right now thru 11/4 Costco has the rolls that you make bags out of on coupon for $8 off. I bought the rolls from the FoodSaver website (Jarden?) once and I don't know if they sell different qualities of plastic, but the rolls I got were much flimsier than the rolls I got originally w/ the FoodSaver and what I get at Costco. So I would rather just buy a box from Costco and be all set for a few years.
I use the FS mainly for cheese - it is the best to keep mold from ruining it. Also I use it to save half of a large fish package from Costco. I par-freeze the fish first, so it's solid, and then do the FS. Otherwise your fish will be squashed out of shape. I use it fairly regularly, enough to keep it on my counter. The plus is that mine matches my kitchen, stainless & black. My old one was white, not so matchy.
I never had much luck w/ the hard plastic-like containers that came w/ it. I don't understand how you know that the air is actually sucked out, it looks the same as it did before doing FS. So I gave up on it and just use the bags.
Have fun w/ it!