I would have to agree with both Lawyerman and Frowder. I just received an X-01 LE after having the regular X-01 for about 9 months. As good as the X-01 is, the X-01 LE is even better. I've only had it for 6 days and so it is still breaking in, but the improvements that come with the X-01 LE as I hear them in my system are:
1. Individual notes have more depth and texture – this is very apparent on accoustic guitar.
2. The bass appears to be deeper, tighter and even more powerful that with the X-01 - which was quite surprising to me.
3. The top end has more sparkle – very noticeable on piano and electric keyboards.
Overall, the sound is more natural and effortless with a touch more air around performers within the soundstage.
I have not heard the P03/D03 combo, but for almost double the retail price of the X-01 LE and then considering that you would need a great digital interconnect, a second really good power cord (as the X-01 is sensitive to power cords and IC's)and more than likely the Esoteric G0s clock ($13K retail) to get the most out of this 2 box unit - I would really think hard about going that way, epsecially given how wonderful the X-01 LE sounds. But, i am sure you know, that the only way to know for sure is to hear them side by side in your system. Good luck with your decision.