That's true. Even a pair left in the original box, in a cool place would probably deteriorate, after 20 years, never mind a pair that's been stressed to near bursting every day. Need someone to 'have a word' with IAG and get some new Mission 751 Freedom released. As I mentioned earlier, the newer models seem very lacklustre, from the few I heard up to around 2 years ago. They also look a bit drab and as someone else said, people do buy with their eyes, before sound, even with loudspeakers. Come on Mission!
They have a very different sound these days, the closest i heard to the old sound of mission's is the Klipsch heritage line they have that same feeling.
These new speakers need to rock and roll