Tube recommendations for 2061X

[Nihon Jim]

On Monday I'm taking delivery of a seven year old, reportedly rarely played, 2061X. For no particular reason other than curiosity I'm thinking about playing around with different tube brands. Not sure what comes stock from Marshall. I've looked through a lot of posts on this site, LP Forum and Marshall Forum and see lots of recommendations. This section of the Roadhouse site seems targeted at the specific information I seek and I'm interested in hearing pre-amp (12AX7) and output tube (EL84) recommendations for this amp. For reference, I am a Led Zepplin, AC/DC, Free, early ZZ Top kinda' guy (hence the Plexi-like 2061X purchase).

Thanks in advance for the help.