I buy mine from Scarlett, Lexi doesn't like the coloured sticks but absolutely loves the museli, plumage and cereal. I buy large size pellets in the plumage as I think she likes to hold it and eat but we have had the small and she's fine with that too.
We also have their veg block thing - attaches to side of cage and Lexi does give that the odd nibble

To be honest the free samples for us were awesome and enables us to try the three main ones (museli, plumage and coloured sticks) without buying them, if you contact animal zone direct they will send a small amount of them - but big enough to give your grey(s) a chance to find out if they will eat it.
