I've listened to a P5 against a P25, both using a super Elys cartridge. (Not the same one) The P5 is 10-15% better I'd say. Deeper, fuller bass was the main difference, with a little more air and better separation of instruments. Everything just sounded a little cleaner and crisper. However, I ended up buying the P25 as a demo, saving $500 or so over the P5.
They are both clearly better than the P3, and I would say that cost difference is well justified. Have fun on your search!
They are both clearly better than the P3, and I would say that cost difference is well justified. Have fun on your search!