MISSION: 770s – good, or just misplaced sentimentality?

I have managed to find a nice Sony Ta-F770ES amp and it came with a pair of Mission 770's. I remember them being the must have speakers at one point but have never heard them. I am picking them up tomorrow but wanted to know if anyone still uses them and can give me some opinions of them. I am led to believe they are the mark 3 version"

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