I started stacking about 3 years ago. I started out with ASEs, then was all about Perth Mint Lunars especially the Dragons then the market saturation of it turned me off considerably, I'll still make sure I get a roll of each per year, the proofs I get my hand on and all, but to me its all about Pandas now. I used to stack ungraded but once the light bulb went on for pandas, I started to want the older versions, and you have to get those graded, too many fakes out there, and now I'm more of a numismatic collector than a bullion stacker but you need some bullion (IMO) to play the upside on the spot price. As this cosmic shift of power moves eastward I think you'll find that the pandas will be the premier coin of the future and 8 million is just a drop in the bucket compared to the ASEs and CMLs. If anything, like Yennus states, it will bring more people into panda collecting / investing, and the previous year's issues will become more sought after. You can't lose stacking current year pandas.