i picked a shop-vac with washable filter, wheels, drain cap at bottom for the bigger jobs bigger capacity like playing with the pool cover in spring. get a smaller capacity for the second one you want to carry around for working on toilet tanks and bowls. check the blower features.
at epinions.com a search for shop-vac yielded different model reviews but the available choice off the shelf with any extra attachments is the one for you.
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