Thanks, and I agree completely regarding the break from hifi. That, in a nutshell, is what I've been reaching for since moving in the "vintage" direction a few years ago.
I'm hoping that the Dynaco MKIII's that are coming into the picture today are significantly different, better, or worse, then the MC50, so I can figure out what to do with them easily. I really don't need to keep them on the shelf gathering dust not being used, and I only have room for one system. I love everything about the MC50, from it's sound to the way it matches up with the MX110 pre, to how it sounds through the Cornwall's. The fact that it runs cooler is a bonus on this very unusual heat wave we're currently enduring in the SF/Bay Area. But I love tubes, and I'm guessing the III's will bring with them their own benefits and match up well with the 110 and Cornwall's too. A nice predicament to be in, but a predicament nonetheless. In the end run, I'll never sell the 250, so the III's will have to be outstanding for me to decide to keep them around as well.