Resolution Audio Opus 21

Platsolos,
What other digital sources have you heard in your system? I am very interested in the Opus 21 and am curious to know what it's comparable to.

I will have a detailed review, but I have owned the following:

Marantz 63SE
Meridian 500 Transport + Monarchy 18B DAC
CEC TL2X Transport + Monarchy 18B DAC
Accuphase DP-65V

I have listened extensively to the following:
Electrocompaniet EMC-1 MKII
Accuphase DP-75V
Marantz SA-14
Theta Miles

I am familiar with, but not intimately:
Levinson 39
Levinson Separates
Metronome CD2V

Platsolos, can you describe the differences between the Meridian and CEC transports you owned? Also, do you think you could have gone with a better dac thus your previos transport/dac combo would be better to compare with/against the Resolution Audio?