the sportsmix in the black bag is good...the blue bag I fed for many years and the dogs were getting to where they didn't maintain weight in the cold winter days unless I fed them quite a bit more...the diamond high energy is slightly less and I feed less and the dogs maintain good weight in the winter and I cut them back some in the summer...less food less poop...
I have always fed the blue bag in the summer and the black in the winter.. I have 5 head rite now and a 50 pd bag lasts me for 10 days. that's about 1 pd of dog food/dog a day.. And they hold up great in the summer. I do have to feed more to em in the winter..
