I am currently using Pen Pals Egg Maker (16%) for my layers and Pen Pal Chick Starter/Grower (18%) for the young ones. I'm been using it since early spring. I think it is a very nice product and my birds are doing very well on it. I was mixing my own feed (oats, wheat, crumble, soybean meal, vitamins, & oil) but was wanting something a little less time consuming. I also made the decision after the feed store sold me some very old crumble that was basically powder and I had to return it. I figured Pen Pals would be more consistent in quality and a whole lot less wasteful.
As far as quality, I think they are top notch...but they ARE expensive and I'm paying $16.95 for the starter/grower and the Egg Maker is $16.50 a bag. The only other downfall I see is that feeding a pellet is probably boring to a chicken...as crazy as that may sound...so I throw them a little scratch in their runs periodically, just so they can do what chickens like to do...peck, scratch, peck, scratch. It gives them something to do. I think they fill up on pellets soon, but then want to peck more. I have NOT had any problems with them pecking each other, though. I'm just trying to stay ahead of any situations that may cause harm.