Seeing the 5oz kooks together does tempt me to get the 3rd, there is an art to stacking and that is knowing when to hold them and knowing when to fold, just continuing with a series that isnt going anywhere probably hurts alot of stackers, even the Rwanda proofs i will take each one as they come and not let any future years take the profit of the first, inflated prices of each subsequent release based on the roosters increasing value could cause some issues.