I agree with many points made here but I wonder if the fact that x metals have only 'fairly' recently been discontinued, still leaves the wave of interest that we know of today. Once production has been over a few more years from now, and unless you become an Oakley enthusiast from other models or loving the brand itself, apart from those already in the know, x metal awareness will surely not be there for the new generation of Oakley fans. I believe the values of good pieces, serialised and complete will always have a collectable value, but will that collectors market as we now know it, still be there in ten plus years time? I'm not saying it won't, but the Juliet / X squared production which was the last of the x metal line has certainly stimulated the interest and market in these models for the moment, but we'll have to sit and wait. Personally, I don't see the number of x metal collectors being at the same capacity in years to come.