I had been planning a change in my system for quite a while that just started coming together. I went from a system that paired a Cambridge 851N DAC and ARC DSi200 integrated amp to a system that pairs a PS Audio Directstream Junior with Bel Canto Ref600m amps. I've had the new DAC for a couple weeks and the amps just arrived yesterday. Still breaking them in, but so far so good. The jump in DAC SQ was major, as one would expect with a more than doubling of price. The first thing I noticed about the Bel Canto amps was greater bass authority. Besides that, I've got a lot of variables going on. We'll see. For now, I'm having a grand time.
As an aside, I work in the energy efficiency consulting industry and I like being able to leave my equipment on all the time without feeling like I'm wasting lots of energy.