Love the Cary preamp- talk about holographic sound stage! (I currently own the SLP-05, the 98's big bro).
I owned the Cronus Magnum II with KT120s and also the Stereo 100. The Stereo 100 is pleasing more dynamic and bigger sounding than the Cronus, despite the similar power rating. It was instantly noticeable as soon as I powered up the 100 for he first time. I say go Cary / Rogue all the way.

