Can anyone recommend a decent vacuum cleaner for DIY work which
doesn't need it's filters cleaning all the time or just burns out.

I've bought a few bag and bagless ones but when sucking up plaster,
brick and wood dust they all block up in no time and then cleaning
their so-called washable filters does little except to set harden the
crap onto it.

Just looking for a decent, reliable vacuum cleaner under £100 with a
decent capacity. Is this possible?