I've had the P8 and P10 together in my system with the same cartridge for a lengthy period and the P10 is better all around. Not significant, but just better in every aspect.
I can't disagree more with rossb but we all hear thing differently. I can only go by my experience and the handful of friends who also heard the comparison and all agreed the P10 is overall better. Not bright, not analytical, but retrieves all the music as it was recorded. Yes, it will present bad pressings as such, it's not hiding anything with a warm blanket.
Give your cartridge time to break in, as well as the table. It's not really fair to give an immediate evaluation, especially on a new cartridge. I'm glad you are starting to experience the difference!