Answer
Like most other comparisons, it depends on what you want to do with them...
Are you a pro pressure washer that cleans large flat surface areas like loading docks or community pool decks? Then the BE unit's caster wheels will help you get a smooth finish with less effort. It's twice as heavy as the Whisperwash, but the stainless steel deck will endure careless operators, and the rebuildable swivel is a plus.
If you're a pro pressure washer that cleans smaller areas, the Whisperwash is tough and lightweight. The collapsible handle makes it easy to move from job to job and will be a great choice.
Both units can handle hot water and large water volume to get the job done efficiently.
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