I use the canisters, Mason jar attachments and bottle stoppers..
These items came with our original FS in the 90's..
I replaced the original FS, maybe 10 years ago, and use the old attachments with the newer FS.
I tried different brands of bags and decided to stay with FS brand. Costco has reasonable deals on bags as does Target and other big stores..
Just as an aside, I have not experienced freezer burn in 20 years.. I have thawed steaks and fish after nearly a year frozen and have not been disappointed with anything I vacuumed..
The newest offerings are pretty cool but, at my age, I doubt I'll need to purchase a new one..
Disclaimer: My experiences may not be as someone else might think correct.. Life goes on..