Good question: to use or not to use. I have a small collection consisting of twelve machines, all Electrolux, four of which were made in the 90's and after. One of the new machines is no longer active due to a blown motor (but I still have it); one is being used by my sister; one is being used by my parents; and one gets used by me when in my other home. <br
The remaining eight were made between 1965 - 1977, so none of them are, relatively speaking, very old. All of these machines see regular use, on a rotating basis, sometimes with the original hoses and attachments (I like using an "all original" machine), and sometimes with replacement hoses and attachments. I would never vacuum up anything nasty with them, bang or knock them around in use, or use them in a really heavy duty situation (even though old Electrolux canisters can certainly stand up to heavy duty use and abuse). Besides, Electrolux, at least, makes it easy to use these older models...bags, belts, parts, and attachments are all still readily available and plentiful <br
The rarest, I suppose, would be the tan Model G, since it wasn't made for very long. I'm not quite sure how rare the turquoise model G, Golden Jubilee, AP series, and the 80 series are, but they certainly will become so in the future.