Top honors in Consumer Reports brand-repair surveys and stout metal parts designed to be rebuilt instead of replaced could make the high-scoring, $1,350 Kirby Sentria upright the last vacuum you buy.
In an era when you can buy just about anything with the click of a mouse, door-to-door sales of vacuums seem a quaint anachronism. But don't be fooled by that image. Door-to-door vacuum sales are big ...