Martins is a really good food as well. Dont think its available in the states.
I feed it to my guys right now, and have fed the martins for years.
However, the "Martins little friends ORIGINAL" should only be fed to rabbits 6 months and younger, so its great for you 8wk old. This is an alfalfa based pellet with a higher protein, how old is your other bunny? If its older then 6 months should be switched onto the "Martin little friends timothy adult rabbit food".
Continually feeding an adult rabbit high protein items like alfalfa hay and alfalfa based pellets can actually seriously harm their kidneys.