There has been a lot written on this vac so I won't repeat what I have already read.  The main things I can add are that 1) to beware that the inlet where the hose attachment is has no one way valve.  Most vacs have a flap valve between the hose and the bag so when the hose is removed, the bag contents don't fall out the hole.  (the bag is right on the other side of the hose connection)  This has about a 2" hole where you can see straight into the bag contents which means if you take off the hose there is nothing keeping the dirt in the bag from pouring back out, especially if you tip the vac nose down.  If you stand it on it's rear no problem.  2) the power switch is under a plastic bar which bends when you press it.  That means that some day the bending will eventually break the plastic bar and the switch will be exposed.  It is recessed and you would have to poke your finger into the hole once this breaks and it will.  Plastic only bends so many times before breaking.  Bad design, but for about $65 how can you complain.  My last Mighty Mite lasted 20 years.