As an owner of the Quad'63 and the Mag 1.6qr, I'd say it depends upon what you mean by "classical". The 2805= '63, and are hard to beat on vocals and small ensembles. The 1.6 is close to the 1.7 and surpass the Quads only in their powerfulness- and that is with real powerful amps. The 150.5 may not be enough. The Quads are simply more resolving of low level detail, while the Mags can play higher SPLs on more complex music. It is a trade off.
