The Hoover WindTunnel is the best vacuum cleaner we've owned. The thing I like most about this vacuum is the suction. It has great suction - better than any we've had before. Prior to owning our Hoover, we vacuumed our house regularly. The first time we used the Hoover, we could not believe quickly the bag filled the first time. I couldn't believe how much our old vacuum was missing.
The Hoover WindTunnel we have is self propelled and easy to push. It is a heavy vacuum cleaner, so having the self propelled feature is nice. The vacuum is not perfect, however. There are some things that could be improved upon. When you are against the baseboard, it does not always get everything. I frequently have to pull out the hose for those tight areas. The hose is very stretchy, but when using the hose, you really can't stretch it out or the vacuum cleaner will fall over. We did buy the extra hose attachment that is longer, but if you use the one that came with the vacuum, expect to have your vacuum fall over on you. We have also had problems with the bag coming out of place after changing it. This creates a huges mess.