Phono preamp tube rolling.


As upgrade rush bites again, planning to perform some tube rolling on my Rouge Ares Magnum. Please share some experience with tube rolling on pure tube circuit topology phono preamps. Practical experiences are preferred. Theoretical options are welcome too.
surfmuz
@tvad 
Joe mentioned Mullard CV4003 box plate as the best of the rest…. Did you personally tried that tube?
@lowrider57 
My experience was good.
What kind of tubes did you rolled? Components? plz..
outcome on best choose?
Post removed 
Mullard Blackburn longplates are very good. I also like the CV4003 boxplates, although the 12AU7 long plate square getter and large O-getter are cleaner sounding with excellent imaging.

I love the Brimar CV4003 boxplates, similar but more  transparent than Mullard with very good highs.