Bagless is fake. Was only good when dyson first developed it due to the "no loss of suction". Now that bagged vacuums don't drop suction as they fill up bagged is the way to go.
I'm still using a £40 'TITAN' Screwfix own-brand wet/dry vac that I bought for hoovering up rubble when renovating my house. Does a big suck, just like any vacuum should.
Are their bagless ones any good? I know they resisted for years.