Oh boy, your gonna get a lot of different opinions but I like Somewhatshocked veggie complete. My cherries love it. I've got a collection of food/supplements that I use so I never feed the same thing in a week(except water change day).
I also like somewhatshocked's variety of food. I think it just depends on what your shrimp like or can get accustomed to eat. My blue pearls are voracious while my yellows seem finicky and less interested in most of what I've tried to feed them.
For the "brand name" foods, I'm sure they're good as well. Just need to try and see what works for you and your shrimp.
I've seen people sell food samples, maybe you'd be interested in that so you don't need to commit to a large quantity of just one product.
Allen Repashy's Superfoods for aquatics! I mix a tiny bit with water then "dose" the tank with a 3 ml pipette in random areas so everybody gets some.There are several forum members here, such as msjinkzd who will be happy to sell you some at what I believe is an excellent price. I use the Soilent Green and Shrimp Souffle. Both are eaten with some measure of zeal.
Admission: I did not pioneer this method of feeding.
Get a variety from somewhatshocked, grab a thing of Repashy, and throw in some blanched veggies now and then. You'll be set. Your shrimp will be happy and healthy and your wallet will thank you for not spending a paycheck on Shirakura or Bornewild or any of those other expensive foods. Not to say they aren't great, I'm sure they are, but for a fraction of the cost you can get much more, still very high quality food. It's really easy to even make your own and costs very little for months and months worth.
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