I still have my Ping Eye 2s in the garage, and I just can't find it in me to sell them or auction them off. I've got a 1 iron from a Karsten set along with the 2 - PW of that set as well. I used to hit that 1 iron pretty good off the tee.
I mean, it's been over 10 years since I've played that set so maybe when I get around to upgrading my Ping i3+s I bought in '05 I'll part with the Eye 2s.
Nah, who are we fooling. You can never have too many backup sets.