great little vacuum

I picked this vacuum up at lowes for about 40 dollars about 2 months ago as a vacuum to use between major cleanings and have found it to be truly a great vacuum. It does a great job on my home which has about 2000 sq feet of carpet. It has yet to run low on its charge, is very lightweight about 4 lbs and seems to do an excellent job of suctioning up dirt. I also find myself vacuuming more since I dont have to hassle with a cord and it is great for stairs. It is basically a strong dustbuster with a handle. To empty it I just take it outside and empty the dirt in the backyard.
I am very surprised this vacuum has not been seen and used more by the general public and wouldn't be surprised if it became a staple appliance for cleaning in the next several years replacing a dustbuster type vacuum in most homes.