Everywhere but the sink.
Most men already buy this way everywhere but the sink. They'll pay for a knife that lasts and cookware worth maintaining, read the label, take care of the tools. Then they shave with a multi-blade plastic cartridge - the one tool at the sink nobody taught them to question - and the burn and the ingrowns show up every morning.
Razor burn is a blade problem. A five-blade cartridge drags five edges across the same skin, each cutting a little further below the surface. You pay the big brands more for the refills while your skin gets worse.