Want a Linn Ikemi is the change made in 2001 good?

In January 2001 Linn made a change to the laser tracking system. Should I make sure I buy a used one with this change?
I own a Ikemi and the changes they made I cannot tell the difference. The dealer demo was a pre-change and mine is a post change. He states he has never had any issues with the pre-change in tracking. As far as sound quaility that circuitry never changed. How soon do you want to but one? I will probably be selling mine after the Christmas Season.