What a great product! I have two kids and a cat so I use Dyson every day. I love it! Unfortunately I did not purchase the help version and recently found out that one of my children has a severe dust allergy. The allergist recommends using a HEPA vacuum cleaner. This product allowed me to modify my Dyson to convert to HEPA. It looks like a factory version of Hepa. I couldn't be happier and thought the price was very reasonable.