The ECM 1up is wonderful sounding, and has proved very reliable and as earlier stated in this thread accurately, a little rolled off on top with great mid range and solid bass.
The two going on Audiogon for under 2k are an absolute bargain.
Moving to SACD would be the only reason to change and that would be a big cash outlay for a top unit as I'm not willing to giveup what this cd player gives me.