Hi FigoVelo,
Yes I have another older Morus Nigra, and the buds are much larger. Now that the leaves are coming out, the new trees do have a similar look and feel to the Morus Nigra. Perhaps the bud size is dependent on the age of the tree? As in, the older the Morus Nigra gets, the larger the buds will be?
I was also looking at the Easter Egg that you mentioned, I am curious as to how that tastes. I am really biased towards the Morus Nigra, as I really like the mix between sweet & tart. For example, I don't like the Pakistani varieties too much as they just taste like sugar to me.