I have been wanting to get my rays on some pellet foods and I am stuck between 3 options. Hikari massivore, hikari carnivore, and New Life Spectrum Mega Fish Formula. NLS is sold at a better price, higher quantity and from what I read is much healthier for fish. So why is everybody choosing massivore? NLS actually is marketing this food for rays and catfish which is prefect for my tank but I can't actually find anyone who uses it. Any information would be helpful, if anybody has experience with both please give a review so I can finally make a decision. Thank-you