Pikey,

I really like your studio... very neat and convenient...

but regarding having all the guitars right there in the same room: I started out that way because its just so convenient to have all the instruments within arm's reach. But after installing the foam to minimize room reflection, I kept hearing a reverb-like sound every time I played...

Turns out that the strings on all those guitars were set to motion by the sound waves from whatever I was playing, and the effect was much like spring reverb.

I moved the instrument rack to the adjacent room and the "spring reverb" (STRING reverb?) went away.

Just a thought for the back of your mind...