Vacuum Cleaners Discussions

Good afternoon everybody! I was hoping for some help.  I am a little torn between buy an Oreck Edge and a Kirby Sentria.  I have wanted a Kirby for a very long time, and I know how heavy it is (which seems to be the major critism everybody makes) as I used one growing up.  I believe the Kirby will keep my carpets very clean and that it will last a long time.  I would buy used/refurbished and therefore there would be no (or a very minor) warrenty.

However, today I decided to stop by an Oreck store and was very impressed with the Oreck Edge, which is the only Oreck that would work on my deep pile carpeting.  I am not convinced that it would do as well of a job and since it's a newer "edition" it doesn't appear yet on with a Seal of Approval on the Carpet and Rug Institute webpage (although many other Orecks do).  A Seal of Approval would be very important to me because I feel like they don't have a vested interest in what I buy.  (Consumer Reports doesn't seem to rate the higher end vacuums, which is disapointing).

Has anybody had experience with a deep cut-pile carpeting and what vacuum would work best? (I also glanced at a Riccar, but didn't fall in love). Anything you can do to sway me one was or the other would be helpful.  Please don't tell me the Kirby is heavy, I doubt the current version can be any heavier than the 1970s version I grew up pushing with no self propelling feature.