Hi Skyflyer04,
I would recommend that you look at your desires very closely... If you are after the "PASS SOUND" You have it... If you are after more refinement within that sound, by all means, stepping up in Pass will help meet your desires... However, I have no doubt that improving your source will make more overall difference in your system than changing from you Pass Integrated to Pass separates.
The Oppo is a good path, it offers disc plus the ability to use it as a DAC.
I would recommend that you look at your desires very closely... If you are after the "PASS SOUND" You have it... If you are after more refinement within that sound, by all means, stepping up in Pass will help meet your desires... However, I have no doubt that improving your source will make more overall difference in your system than changing from you Pass Integrated to Pass separates.
The Oppo is a good path, it offers disc plus the ability to use it as a DAC.