budt, of course performance and its associated value is all subjective. That being said, I thought the improvement over the X-03se was worth the money (though I may have more money than sense!). To my ears, the P3/D5 did a much better job of separating the instruments and notes. Everything sounded more distinguished, versus a mass of sound. Additionally, I thought the sound was more refined, and liquid, more like analog. Dont get me wrong, the X-03se is a great player. The one both systems share is their incredible ability to retrieve detail. I am consistently amazed at what I am hearing.
I guess the bottom line is if you have a system that can take advantage of the extra performance of the P3/D5 and more importantly do you have the ability and desire to hear the differences.