Quad ll Forty or Classic

just listened to the Quad ll Forties today and thought they sounded really good. any body with experience with either the Forty or the Classic i would love to hear your thoughts. does the forty sound like a classic with more power or are they different?
The character of both is as sweet as the original Quad ll. The bigger brother however will be a better choice for a wide variety of speakers. I once compared the Forty to original ll's, and there was little sonic difference through odeons and JBL 4312's....Both of these speakers however were an easy load.