Anyone upgrade from a Pass XP15 to a Pass XP25

Has anyone switched from a Pass XP 15 to a Pass XP 25 phono stage. I was just wondering what the sonic benefits are. I currently use the following;
Fully loaded VPI Aries 3 turntable with Grado Statement 1 cartridge
Pass XP 20 preamp
Pass XP 15 phono stage
Bat VK 60 power amp
Reference 3A Episode speakers
I love my XP15. I wouldn't be able to comprehend how much better the 25 would be.