Glad it helped... I use O2 in jars I don't use frequently... may be overkill, but it will probably help keep things longer (there is only so much air the vacuum sealer can suck out, right?).
I bought the foodsaver at Cabela's when they had a good sale. They sell similar units at Walmart, Target, K-Mart, Amazon... I've seen them for as little as $79, although I've heard of folks snagging them on Craigslist or freecycle for much less than that.
I bought the mason jar attachments on amazon... ditto for the canister. That is the best source for those things I've found. Foodsaver doesn't even sell them directly (they actually recommended Amazon to me when I called them). The foodsaver does have its limitations (won't vacuum seal mylar -- seals fine, just won't extract the air -- and doesn't have a wide enough heat strip to seal up the big mylar bags in one go), but I don't know that the other brands have the vacuum port, and for that alone, foodsaver would be my choice.
If you do have a problem with the vacuum tube attachment wearing out, etc., you can get a replacement directly from Foodsaver.