If Krell floats you boat, then absolutely go for it - but let's not discount Rotel just because you got tingles up and down you leg when you auditioned the Krell.
I have Rotel and B&W 800 series gear and I can tell you that it's a hard combination to beat. Insofar as the gear leaving the room and leaving you only with the music, heck, I've had that experience with my Yamaha DSP A1 pumping 110 watts through a couple of little B&W DM601 S3's. With my eyes closed, my brain was tricked into believing that the sax man was just 5 feet in front of me. Seriously!
So, it's all in the moment I suppose.