Currently there are these two used sets available in my place, and their prices are almost the same. I'd like to know the differences in them: McIntosh C504 pre amp & MC502 power amp vs McIntosh MA6200 Integrated Amplifier I intend to drive Spendor SP1/2, JBL L110, and Klipsch KG4 with one of these McIntosh amps. Main music types to play are vocal, jazz, classical, and some pop/rock. Currently am using Sansui 7070 and Marantz 1060-nothing wrong with them, just want to try McIntosh as I have never tried them before. Is McIntosh definitely better than them?