Hi Brian,
Glad it was of some help to you. I have only been using Kalmbach 17% Natural Layer pellets for a month, so don't know long term. The girls seem to like it & they are laying well. I never even knew Kalmbach was available in my area. I prefer organic, so I am picking up some Kalmbach...
Don't know if that chart is totally accurate on the additional vitamins. I have tags from Kalmbach Natural layer & Organic layer & Nature's Best Organic & they both have vitamins listed on the tag, whereas the chart shows none.
There are some feeds that have fixed formulas & don't change things based on price. Agway used to be one, but has now been taken over by Cargill, so don't know if they still are. Nature's Best Organic is another one that claims a fixed formula. I would guess most others are not.