I agree with what Cameron Hizer says. The stereo effect is much broader and more enhanced than a conventional system, but it ain't perfect...and no one has said that it is.

It's just better, and in my opinion, quite a bit better, and worth the extra expense.

Certainly, not everyone will want to go the extra bit, and that's their prerogative...it still sounds pretty good in mono; but, I want the best sound I can get, so I don't mind ponying up the extra loot...they pay for themselves in no time, anyway, plus, it's a tax write-off as well.