I've had excellent experiences with generic products. A few months ago I started buying most of our groceries at Aldi's, and those are all generics. With the exception of their salsa, we've liked everything. I also buy a lot of generic products from
Walmart.
I used Tide and Cheer detergent for years, but switched to Sears powdered HE detergent a couple of years ago. I absolutely love it. It doesn't leave a scummy buildup in my front loading washing, doesn't fade our clothes, dissolves and rinses away well, and it's dirt cheap. It goes on sale pretty often, and I can get it for around 7 cents per load...compared to the 25 to 30 cents per load I was spending on Tide and Cheer.
About the only things I'm brand loyal to are toilet paper and tissues. We prefer Cottonelle or Quilted Northern toilet paper, and either Puffs or Kleenex tissues. Oh, and I'll only use Plochmann's mustard.