I always find it interesting (and to some degree amazing) how differently people feel about the same feed. And, also its interesting how different everyone's feed programs can be.
I was feeding Progressive Nutritions grass balancer til the price went way out of my budget, so changed my feed program, last September: my senior stallion is on senior feed, the other boys are on a low sugar/starch pellet (one is Cushings), and the mares are on an extruded feed. I initially changed everyone to the extruded feed, except the senior stallion and the gelding that was later diagnosed as Cushings, they were both on a mix of senior feed and beet pulp-based sweet feed (per the manufacturers directions). When the gelding was diagnosed with Cushings, he had to get off all the sweet feed, so I bought the low sugar/starch pellet for him; and tried to move the senior stallion over to the extruded to simply my feed room. The extruded didn't work for the senior stallion, so he went back on the senior feed without the sweet mixed in, and is now looking pretty darn good. The three feeds seem to be working well for me, so hopefully, I won't have to change again, anytime soon. The only thing I've added is some ground flax seed for the normal horses (and a joint supplement for the couple that need one); the Cushings gelding has a few other supplements.