Very helpful thanks so much for providing your results and suggestions. It did help me make the switch and my girls are looking great laying well (for winter in MO) and the coop smells better Cecal poos seem less prevalent than before and don't smell as strongly.
It is my personal belief that whole grains are healthier overall for the chickens, and there is a rumor that extra nutrients are released from grains by fermenting. But pellets and crumble will also ferment and create probiotics. The most noticeable difference is that the pellets/crumble turns to mush, and the grains swell up. I find the grains easier to handle because of this. The point is, both work, but grains tend to be easier to handle and are rumored to be healthier.
Have fun on your adventure!