I have the P3 in my main music system, and the Dynaudio Audience 50 in my home theatre system. Powered by Densen DM10 amp, Quad 77 CD player and Kimber 8TC cables. When I first replaced the Dyns with the P3s, I was struck by how much smaller and narrower the soundfield became.
But I decided to keep the P3s in the main system because there was more detail and I could hear more layers in the music. The P3s made it much easier to track different musical instruments and voices. They made music sound more immediate (and therefore exciting), too.
The Dyns, on the other hand, is more versatile - it works with a wider range of music. The dispersion range is bigger. For home theatre, the P3s are better with dialogue, but the Audience 50 are better with sound effects.
But I decided to keep the P3s in the main system because there was more detail and I could hear more layers in the music. The P3s made it much easier to track different musical instruments and voices. They made music sound more immediate (and therefore exciting), too.
The Dyns, on the other hand, is more versatile - it works with a wider range of music. The dispersion range is bigger. For home theatre, the P3s are better with dialogue, but the Audience 50 are better with sound effects.