I feed Triple Crown Sr. to my rescue horses. It is different from the other 'Senior' feeds on the market in that Triple Crown uses a consistent formula. Most 'Senior' feeds switch out various grains and sources of grain depending upon what is cheapest at that time of year. Triple Crown sticks with a consistent formula. Just look, they actually list the ingredients in the grain, rather than just listing the percentages of protein, carbs, etc. Try finding out just what kinds of grains actually make up the other feeds, and you'll soon realize that they don't offer details as to how much of it is corn, soy, etc. I have elderly rescue horses that have serious health issues. I need a Senior formula that is consistently high quality, so my horses don't react to the change in the formula, or to particular elements in the feed. I have used Triple Crown Sr. for my rescues for a few years now, and feel confident that I know what I am actually feeding my 'special needs' equines. It is a bit higher in price, but I have found that the higher quality of the feed acts as a preventative. Just one vet visit is expensive enough to wipe out the savings that horse owners think they are gaining by using cheaper feeds. I think of Triple Crown Senior as 'preventative medicine'. It has been consistently high quality, and pays for itself in reduced vet visits. All my horses love it! Tasty enough that even my picky eaters will take their meds that are mixed with it. Highly recommended!