Does anybody know the difference between using CD player and Laser disc player to listen music? I'm using a laser disc player to listen music now, i'm not sure whether CD player is really necessary or not for my system to sound best. From what i listen now, the sound quality of my Laser disc is just seems like no different to a CD player. Any opinion?

My system as follow:

Marantz PM-7000 Integrated Amplifier
Acoustic Energy AE120
Kenwood LVD-320
Cable Talk Talk 3.0 Biwire Speaker Cable
Cable Talk Monitor 3 Speaker Interconnect

I'm thinking of selling my Acoustic Energy AE120 speaker, does anyone know the second hand value of this speaker?

Thanks.