@sptyks
"Then, recently I read somewhere that the American Hoover (TTI) WindTunnel Air was lighter and performed as well or better than the Felix. So I decided that since I already own a Hoover WindTunnel Air, I don't really need to spend a lot of money on the Felix."
Whoever said that is ridiculous! I have both, (more like I have 4 of the windtunnel airs, both the original and the steerable one).
You'll have poorer suction which results in the thing never picking up anything on the right side against walls, even though the suction hose is there. Suction on the left side is barely there. Then, the upper windtunnel will clog up with dirt/hair making it useless (personally I think windtunnel technology is just the wrong solution to the problem - a proper chevron roller is the solution). Also, the vacuum will accumulate sand/dirt in those channels and spits it out when you tap on the head when going from bare to carpet floors.
Oh wait, it can't even clean bare floors. I end up using the nozzle itself. The felix OTOH, I barely use the nozzle since it can clean everything w/o it. Just set to level one, bam, no escape for sand on bare floors.
The seals on the bottom of the dirt container will squeal when you transport the vacuum because one bump/jolt on it will let a bit of dirt work its way into it. The hose connectors were barely glued onto it, and thus will work themselves out of the threads and come apart.
Well, it is lighter, and did come with an extension hose and the handle doubles as a extension want, but big deal. It's lighter because the sebo felix is better built. Heck, the motor in the felix power head is slightly bigger than the main motor in the WT air!