I've got extensive experience with two previous versions of this machine: the original and the first Boss model.  They both performed well under heavy use and I might not have needed the second if the mother of one of my co-workers had taught him how to change a bag.  Over time the Mighty Mite has gotten bigger and more powerful, but not if I recall correctly, heavier.  They've fixed the problems the hose caused by not being able to rotate, and spaced the wheels further apart so it doesn't tip over as easily.  The handle still gets warm but not overly so, and considering that it is a lot more powerful now, that's not so bad.  It was originally designed primarily to be used in conjunction with a sweeper, I'm sure - the lightness of the hose and wand thus a virtue - and not for use on carpets or to take the place of a whole house canister.  But it appears they've tried to appeal to the market for those just wanting a cheap vac as well as a handy one.