I have a smaller previous model of theirs and I use it very often, so I jumped on this larger when I saw it. I'd say its twice as powerful as a previous model, but the battery discharges about three times quicker. But you generally only use it for short periods of time leaving leaving plenty of opportunities to re-charge.

I use these for (in order of most often): Blowing sawdust off the tables and floor in the garage. Blowing sawdust off of boards, lumber, or myself after I've just sawed, sanded, or drilled. In Fall with this better model - blowing leaves off the driveway or at the curb . Stoking the lump charcoal in my smokers and grills. Hosing out dust and whatnot from keyboards, computer cases, and fans. I have never been able to figure how to vacuum with these but I don't care since I have other portable vacuums that are built just for that purpose. And I generally don't use the slew of other included attachments - I pick one and stick with it.

The only thing I don't like about this model is that you have to cycle through all the speeds to turn the unit off. If you overshoot that off setting, you have to cycle trough all the speeds again just to turn it off. The previous model has a up/down slider bar on it so there no way to miss the "Off" setting.