I believe the stock 12AX7s are JJ ECC83s, and the EL84s are Sovteks of some sort, probably the EHs.
From experience, my personal recommendation would be JJ ECC803s (not ECC83s) in V1 and V2 (first two tubes from the left). Normally I'd go NOS Sylvania in V1, but if you're looking for a warmer...