The GAS 18V-10L from Bosch is a great cordless vacuum cleaner!
I have 3 of them (one in the car, one on the building site, one for vacuuming the chop saw).
If the filter is dirty, the cordless vacuum cleaner loses suction,
knock the filter out quickly and it has good suction power again.

A little more, but it's not worth buying. Our dyson sucks about 7 times more.