I've arranged to hear DSP7000 vs Wilson Sophia with a dealer in London in the next week or so. He can replicate my Krell, but not the 861, but since I'll only be listening 2 channel. He does have G91 / G98 / G07 - should I ask him to use the G91 with both set ups - will that sound much like the 861?

I'm going in the afternoon on a work day so I'm on the train and have no hope in carting my 861 with me!