To me its not a tradeoff. The Classic platter is a "WOW" definite improvement to the accrylic. I had both and I tell it how I hear it. You might also want to give the mag/lev platter a try.
VPI acrylic vs. aluminum
I am wondering what is the biggest difference between acrylic and aluminum platters. I have the acrylic and I really like the midrange. The heavier aluminum platter ime has a little more heft in the bass and a little quieter background. Not sure the instruments sound better though. Tradeoffs I guess. What are your opinions?