Pope Holland Tubes for Cary SLP98P


I have read some good feedback on the Pope tubes for the Cary preamps, does anyone have experience with them and the Cary? Is it worth $600 to upgrade, is there that much improvement?
macdadtexas
I have an SLP-05 and the Popes were the best for ME out of the 10 different tubes that I tried. I have the set that's in the pre and some spares...
I have the Pope 6SN7'S in my My Cary SLi80 and they are best I ever heard and I have tried about all them.

I have fully upgraded 98P Popes are my favorite, i brought a quad from Upscale in 2016. I think Sylvania a very close 2nd.