Speedy John has a point here. The 21Y old is going to be very scarce, and will be back on the shelfs again somewhere in 2008.
The mitchells still own the Springbank Distillery aswell as the Longrow, and the latest aquistion the Glengyle Distillery.
I believe that at a certain point the name Mitchell will change in the name Wright, just a thing I have heard some years ago.
So grab your stuff while it still last, or otherwise you have to wait quite a long time......