Noah - The Kirby is a Heritage 1 which has the later rear zip bag from a Heritage 2 Legend fitted. The Sani-emptor has the fill tube fitted with oval bag adaptor, so it takes paper bags rather than the dump out bag. I intend to find a Heritage 1 bag for it in due course and shine it up as it is in otherwise good condition and is worth preserving. Its just that it was previously not used for some time and in someones attic or in their shed - not sure which, but it was part of a house clearance as all the 11 above were.