kalali,
I could give you my opinion between a fast or slow sounding amp,
The difference is gonna really show up for me in the sound of guitar strings especially acoustic guitar and also in the overall sound of the piano.A slower perceived amp such as a Mac,which I have owned several yrs ago,just don't sound natural to me with these instruments the sound just lags in comparison.
I grew up playing the piano and I know what kind of sound I'm looking for and without question a Mac won't get me there.
I listen to some other forms of classical music occasionally and any perceived slowness wouldn't be satisfying to my ears either.
Faster amps just sound more natural and realistic to me and this is a aspect I picked up many yrs ago.
I know there is a lot more technical details that I could talk about but I will just give you this short version, I hope it helps you.
Kenny.
