I owned the VSX-94TXH and many older Pioneer Elite receivers back in the day. I also have had most of the flagship SC models and found all of them to out perform my old 94TXH.
I had the SC-07, SC-68, SC-99 but didn't go for the SCLX901 due to the fact they removed the USB DAC input on the back and that just angered me. I used that feature on the SC-68 and the SC-99 and loved it.
I hope you enjoy the Marantz. Like to hear your impressions. What speakers are you driving?