SACD Player Hates CDR's

I just picked up a NIB Sony scd-xe670
When playing CDR's only it works fine for a while but eventually the music begins to break up.It makes horrible noise if I dont remove the CDR quickly.
Sometimes the tray door wont even open.I have to turn the unit off then back on to get it to spit the CDR out.
Is this common behavior for at least some sacd players?

Also,I have 'heard' the 670 has the same DAC as the $1800 Sony 555.Is this true or BS?

Finally,my player came with a new copy of Miles Davis "Kind Of Blue" I opened it and played it once
Anyone want to trade even up for a rock/pop SACD? If so email me what you have.
Thanks!