I shop at Raley's, and their store brand is 95% as good as the real thing for almost all food items. Their cereal is great, their sodas are great, their boxed dinners are roughly the same (though no boxed dinner is really "great"), their spices are good. We buy almost exclusively Raley's Fine Foods (Nob Hill Foods) brand stuff cause it's cheap and it tastes good. They've got some Crunchy Granola Raisin Bran which is better tasting than Raisin Bran Crunch. I just wish they made a knock-off Quaker Squares, cause those things are awesome.
Also, Kirkland stuff is usually very good.
But, Hytop (Winco Foods), on the other hand, is shit.