anybody fed this and what did you think? 

This is the ingredients list for the complete which is 22% protein:

Poultry Meal, Fish Meal, Brown Rice, Beet Pulp  (sugar removed), Poultry Fat (preserved with mixed tocopherols), Dried Egg, Flaxseed, Natural Chicken Flavor, Vitamin A, Vitamin D3, Vitamin E, Vitamin B1, Vitamin B2, Vitamin B12, Niacin, Pantothenate, Folic Acid, Biotin, Choline Chloride, Iron, Copper, Manganese, Cobalt, Zinc, Iodine, Selenium, Chicory Extract, Mannanoligosaccharides, Potassium Chloride, Salt, Yucca Shidigera

I've recently swapped my working cocker onto their lamb and rice formula (24% protein) and so far (about a 3 weeks in) she seems to be doing well.  Nice coat, active, maintaining her weight.  The only thing I have noticed is that there seems to be more coming out of the other end than when she was on her previous food.
We are going to keep her on it for the foreseeable future I think. 

thats interesting - have just swopped my two competing dogs to the performance and my retiree onto the complete.  One thing I have noticed is the output coming down but they were previously on AG

To be honest I am still playing with the amounts I am giving her as she is prone to being a bit skinny so I upped the amount but I think it's probably a bit too much so I am now reducing it and will supplement with some raw lamb brest etc I think.