I recently had a Dirt Devil "Power Pack" canister in for servicing.I had to completly disassemble, clean, and deodorize the vacuum. When I was done I plugged it in to test it. Wow! was this a quiet vacuum and even the powernozzel was surprizingly quiet too. I put the vacuum guage on the machine and it pulled 82".. I was very surprized. When I had the vacuum open to clean the motor I noticed it was an amtek. Pretty good bang for your buck,,, considering it is a Dirt Devil. It kind of remined me of my Miele Solaris abit.When the customer came to pick her vacuum up she was in aww cause it looked new. , she was very happy.!