Hmmmmm...Not sure where you want to go with this Rob.
Kirbys are big, heavy vacuum cleaners. My Grandmother used to have one when I was very young. It was so noisy, that she traded up for a Hoover Dial A Matic upright. My grandfather then used the Kirby for cleaning his car. Because it was so noisy, it frightened me.
My Mom had a Filter Queen canister for over 20 years. Today's Filter Queens are basically the same design as 50 years ago. She traded up to a Hoover Celebrity canister in the early 1980s, because she wanted the power tool for cleaning the carpets, which her vintage 1961 Filter Queen did not have. I inherited the Hoover and still use it today. It's probably one of the strongest horsepower canisters that Hoover ever built. And it was made in North Canton, Ohio, USA, not abroad.
My other grandmother had a traditional Electrolux tank vacuum cleaner from the 1950s. When my grandparents died, my aunt took it. To my knowledge, she is still using it today.