Whack-o for Vac-o's...
The phrase "got us into the world of vacuums" can be interpreted in a couple of ways, and thus point to different machines. If by that phrase, you mean the first vacuum cleaner that made any sort of an impression on me, that would be a late '50s vintage Lewyt canister we had when I was little. It was pink on top and charcoal gray on the bottom with pink tools. By the time I was four, I could change the tools and replace the bags. I felt like I was the master of that machine, and it felt good to have that sort of agency.
All that said, the one that turned me into an enthusiast or a 'vacuholic', take your pick, was a Kirby Gsix 2001 Limited Edition that I rescued from a dumpster about twelve years ago. It was in great shape, needing only a bag and a new belt. Seeking information on that machine, I went online and stumbled across Vacuumland, The rest, as they say, is history. A few months later, I found a Gsix tool set for it at a thrift store for $4 and change. I like to think I reunited them.