Conrad Johnson Sonographe sa400 or McCormack DNA-1

If you go the McCormack route I'd highly recommend getting a unit that has Steve's A revisions already built in. You won't pay all that much more (relatively speaking) and they're entirely different amplifiers. Personally I'd take a DNA 0.5 Rev. A over a stock DNA 1 if cost becomes an issue and it has enough power (DNA 0.5 runs more like a 125W amp than it's stated 100W, not that that's a huge difference). No idea about the CJ amp. Best of luck.