MA6200 vs MA6450


I have the MA6200 and was wondering if the MA6450 will sound as good if not better? I'm really wanting those meters.
2string1
   I  owned the MA6200 for many years, without any problems. But as I expanded my system,  I needed an amp with more power and changed to separate McIntosh preamps and power amps. As to the MA6450, I have no opinion, as I have never it. 
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