The only Hikari I have for my fish right now is the Massivore. It took me a while to convince myself to buy it because of the price tag. But I am glad I bought it. Don't let the price of this stuff fool you - because of the fact that the pellets are so massive, the bag I bought is going to last me for ever.
When I put Massivore in my 55 gallon, I put just 2 pellets in. This is enough for my 7 inch Texas. If he can't finish two, then my pleco cleans up the rest.
For my 125 gallon (stocklist in my sig), I drop in probably no more than 5 pellets at a time (I also put in NLS pellets for the smaller fish).
So my point is a bag of this stuff will last a really long time, so the price is worth it.