Just purchased the Shark Rocket Pro vacuum cleaner and found it to be great. It was very easy to assembly. It has plenty of sucking power, the  vacuum head rolls easy on its two wheels and the swivel head makes it easy to maneuver. The vacuum head is about 3" in height and with the wand arm being 30" in length, it's very easy to get under beds/furniture.  Also the  power cord is close to 25' long. It is very easy to detach and empty the unit the collects the dirt/hair/etc. Also one of the multi tools that comes with it was broken when I opened the box. I called Customer Service and within 5 minutes they were sending me a new part. Great vacuum and great Customer Service.