I have had bad luck with electric motors dying in Shop-Vac brand vacuums. It's too bad, since they're still US-made.
Currently I have a Craftsman, which is the same as Rigid. It's from China, but it's extraordinarily well designed. It has an extra set of impeller blades for cooling the electric motor, rather than depending on the canister suck-through air. Hence it won't overheat if the filter or tube get clogged.
On the other hand, Big Lots always has Shop-Vacs for cheap, so you could get them there and treat them as disposable when the motor dies.