At the risk of brining this thread back from the dead, I thought that I would provide everyone a little update. I actually picked up the c5i last year and have been absolutely loving it. It replaced a peachtree Decco2 and this unit completely destroys everything about peachtree. The DAC is superb. The Decco2 DAC, while good in its own right, sounded muddy and veiled in comparison. The level of detail coming from the c5i was simply incredible. Mind you, I am mainly listening to high bit rate Mp3 (256, 320) and a few lossless songs, so there is certainly a bottleneck in my source material. My speakers (AV123 ELT525s) are likewise not top-flight (though Sierra-1 NRTs will be here on tuesday!).
That being said, I could not be more happy. The headamp is very well done as well, a good step above the Decco2 as well. While this is an expensive unit, I cannot believe that one could find a comparable DAC, headamp, AND power amp for the same price, and in such a small and utterly attractive package. I don't quite understand the lack of buzz about this unit, but I would recommend it to anyone.