If you do a direct comparison of the M60 and M80 you can hear a difference. The top end is just more open giving a little more realism to music. If you ever listen to music in pure 2 channel mode, the M80 definately has more bass, but that difference dissapears with a sub.
Facing a $350 difference I thought the M80 was worth it. If I had to trade/sell the M60, I don't know... I would be tempted to add a second sub instead. Depends what you can get for the M60s.
Last edited by fredk; 05/22/10 02:37 PM.
