Pieds and bumblebees are going to suffer from over-popularity. This lead to a serious boom in production numbers in 2009-present, and it will continue.

This is good and bad for you. Prices are dropping, however with over production, you'll have more choice. I'd say wait for the 2011s to start hatching simply because there will be lots of them. Jump the gun and be willing to pay a premium when you find THE animal that you have in your head as "the one". It'll be worth it