Ive used all kinds of Hikari and seen some pretty decent results from using them often...and ive recently been using New Life Spectrum but my Male Managuense has been only eating its right now...and all my catfishes and ive noticed my managuenses coloration has deepened and showed alot more blue now with better lighting...and now waiting on the arrival of my Hikari Massivore Delight pellets on Thursday...=] so i can't wait and see if they give any great results as the other Hikari products! OSI products have some pretty good results themselfs. Uhmm and Omega One Pellets are really clean and don't break up in the mouth of the cichlid like other products do and is much more productive in giving better colorations and growth like some Hikari products =D