I'm feeding Merrick right now.
If your dog has a sensitive stomach, it may be a rough transition with all of the veggies in it.
I like it because of its availability and price. Marge, too, likes it.
She is currently having a problem with hair loss on her ears. My gut feeling is that it doesn't have to do with the food (as the rest of her coat has gotten much nicer after we switched to Merrick) but I still figured I'd mention it. I might have to supplement with Fish Oil.
Over all, I recommend it. Start with one of the blander varieties.. Grammy's Pot Pie, for example.