I only use Shark vacuums for years now and this one is especially impressive. I have a similar model but about 2years old. They have improved on just about every aspect of that model. The vacuum itself is sturdier but not heavier. The dust cup is bigger and comes out the front to empty instead of the back like the old one. The cord is much less rough when you go to wind it back up. Just a small improvement that makes such a difference. It stands by itself when not in use, when in comparison the older model has to be leaning against something. The odor technology is a new and much appreciated bonus. The amount of dust and hair it got up from my carpet was amazing. I really love how Shark has improved on an already great design. I will always buy their products for that reason.