Dyson Animal
We have had a Dyson Animal unit for 10 years, The best vacuum hands down. We had a demo of the TOTL Kirby with all the attachments (lots of loose hardware) and a huge price tag. Impressive, yes as to the PU power. We decided to try the Dyson at substantially less cost, no bags and a cinch to empty and clean. This thing beat the Kirby hands down.
I have replaced the HEPA filter once. Easy to disassemble with no tools and using a quarter to open the floor brush skid plate to remove the typical threads around the brush.
I have yet to encounter anyone in real life that does not love Dyson. Check out the HGTV website forums as they frequently ask about fave vacuums. Dyson is the hands down fave every time.