I usually feed the Purina game fish chow, (I am not that worried about the max performance as much), get it from my local mom and pop feed dealer that I like to patronize, the last time they were out of the game fish so I bought a couple bags of the Purina MVP. wow, there is a pretty big difference in the quality of the feed, and the fish love that stuff!
So I started keeping it in the truck to hand feed when I get by there and put the way cheaper game fish in the feeder, in 15 acres I could never feed enough to feed them all for maximum growth, and couldn't afford to if I wanted, I just kinda supplement feed to keep them hungry and then hand feed to watch them come sailing up when you walk or drive up to the pond.
I have fed the optimal several times and it appears to be super high quality feed as well, you can see them be more aggressive to a feed that they really like. I don't think a person is gonna go very wrong with either choice, a little more spendy but in this case I do think you get what you pay for. and the fish will thank you for it.