This may not be a good vacuum cleaner if your home is fully carpeted (the brush head is just plain useless on carpet), but my home has all wood and tile floors. This is easily the most powerful vacuum I've ever used.
The suction is so fierce, with a new bag you can lift a small child or pet directly off the floor. Any and all pet hair within a foot of the suction head is sucked directly into it.
The retract/extend feature of the wand is also handy, because the vacuum is easily stored in a coat closet. The wand locks into the bottom of the vacuum when it is standing vertically.
Filtration is incredible. I'll never use a filthy bagless vacuum again.
I'm not a particularly into home cleaning devices, but this vacuum is so bad*ss I just had to review it.
** Edit 10-2011:
What started out as a powerful, light home cleaning device ended up in the recycling bin after less than three years. The handle is very poorly designed and will split in half, casting the main switch (impossible to fix). The wheels on the head are so fragile that a drop from waist height will snap the axles off. Finally, the clever retraction mechanism for the main tube turns out to be little more than a lock. When it seizes, the tube is frozen in full-length position.
The motor never lost power. Everything on the other side of that hose was cleverly designed but poorly manufactured.