Thanks!
This model does feature the same powerdrive as the windtunnel, And I just finished stripping it down for a nice sudsy Spa-Day.
When I tried this out at Goodwill, EVERYONE in that store heard it, Like a Boeing 747 Taking off!
They marked $5 off the price of $10, And for that I couldn't go wrong.
I got home, expecting bad bearings in the brushroll, or worse. When the noticed both the brushroll and powerdrive where free, I was at a lost. I was fooled by the styling, and remembered this was a fan first machine- The #1 cause of loudness was a broken fan!
This fan had a HUGE chip in it, I'll have to post a picture later. I'm relieved, and will look for a 12-Blade when I go scouting for parts for the Elite 350. If not, I'll use my spare 6-Blade.