Great question. Most of us seem to wish for every "new" generation of gear from any manufacture to be great sonic leaps. Usually this is just not the case. I have had many sets of Magnepans, and the improvement from generation to genetation is real ..but subtle. I have often used the phrase that "a ten year old Ferrari, is not necessaraly a bad car". The above post hits it, more midrange detail and openness, and not much difference in the high end or bass.
