Almost always Electrolux and Kenmore in my family, but now its disposable crap. A few hoovers back in the day, but we were an Electrolux Dominant family
That Concept 1 is from 1992, one of the very last made. It was either a K-Mart or Sears exclusive. The funny thing about that one is that it doesn't have the Quadraflex agitator. It's a pretty decent cleaner though.
I thought it was a lot later, mainly because it sure doesn't look like it's from the 70's! I saw a newer one in a thrift store, and it looked very similar to that. Wish they still used the Quadraflex in their newer vacuums.
I really wish they had kept using the Quadraflex too. I feel like it definitely does a better job. Also, notice how it says "Self-Propelled" instead of "POWER DRIVE".