I am a big fan of the Euro Styled power heads which for my money are nice and light, but still pack enough of a powerful punch to get the job done on both carpets and bare floors. Electrolux used to carry them but discontinued them much to my surprise. So Bosch is the only game in town with a lightweight power head, and not surprisingly the Bosch Electro Duo Plus is their best selling model. It is really a nice vacuum, perfectly sized in my opinion and is made in Germany, so you know it is going to last a long time. I am from the old school and like my vacuum to last for many years, and the cheap stuff on the market nowadays is just a breakdown waiting to happen. Starting at $649.99

I purchased the Electrolux Harmony vacuum cleaner from AllergyBuyersClub.com a few years ago since they gave it a very good rating for best value Hepa vacuum.  It has done everything they said it would: ideal for removing dust, pet hair, and allergens from bare floors and medium carpets, lightweight and easy to use, retractable cord – love this and it never smells like you have vacuumed after using it – so it certainly must be sealed so nothing gets back out.  I recommend this vacuum for anyone who wants a great value on a Hepa sealed vacuum for under $300. By the way - shipping is free for orders $150 or more.