Swapping tubes out of a Krank Rev1, Suggestions?

[jet_dry]

My amp is starting to fizzle and it's time to change the tubes. I know changing the tubes only alters the tone slightly, but I'd like to hear if anyone has a personal preference for a good quality, high-gain tube.

Thanks guys

 

[Metaltastic]

SED Winged C power tubes, Shuguang (or just Chinese) 9th Gen 12AX7's with a balanced one in the spot closest to the power tubes, and search function

 

[jet_dry]

Will give 'em a shot! (search function too; my bad)

Thanks