I have brewed a couple Homebrewers Outpost kit, 1 Norther Brewer kit, and 2 Brewers Best kits. I have a kit on the way from Austin Home Brew. IMHO, especially if you are doing extract kits, there really isn't much of a difference. This place may give you a couple more things than the other, or the other may have better instructions than this or that. I think most of these suppliers provide pretty fresh ingriedents, they just have minor differences that I don't think would actually affect the taste between beers.