Filter Queen Princess
I bought a used Filter Queen Princess vacuum for $300 around 2000 and have been using it for 8 years.
Occasionally it has lost power and when I took it in, I learned that I had to replace an inexpensive filter ($8) or have the power head serviced ($22).
It has powerful suction still after all these years. The tools are all stuck on to the canister for easy finding. I strongly recommend it if they even make them any more.
It has the usual drawbacks of a canister - gets caught on corners, heavy to carry, etc.
But I love the bagless can with the reusable cone filters. We buy 10 filters about every 3 years and reuse them 10-20 times each.
The can easily comes off of the base and can be carried to the garbage.
I don't have much to compare it to, but I really like my Filter Queen Princess vacuum cleaner.