Sony scd xa5400es or dvp ns9100es?


I currently own a dvp-ns9100es and just wondering how better a stock scd-xa5400es will make. Has anyone tried comparing these two?
johncdnt
I happen to presently have both units, but in my current setup I use the 9100es as a transport with a digital cable to a Theta Gen Va DAC. I'll bypass the DAC and run it directly to my preamp this weekend and A/B it against the 5400 and report my impressions.
Closdesducs, does your 9100ES out to the DAC make a loud audible pop when you open and close the disc tray?