While I'm not using them at the the moment for budgetary reasons, the service and products were excellent. It's a very conscientious, family business.
They're based in the north end somewhere (Bothell?) and right now the site says they service Woodinville, Bothell, Redmond, Kirkland, Bellevue and Mercer Island, but I received deliveries in Wallingford, so I don't know if they recently dropped Seattle or just haven't updated the page in a while.
It's a bit spendy at $13 to $14 a gallon, but I thought I'd pass on the info for those who might be interested. Who knows? Maybe they'll do bulk deals.