Marshall JCM800 best tubes?

=C= 6550/KT88 for the poweramp (you'll have to change some Rs).
I have some old Siemens and Penta in the poweramp of mine (32 years old but working and sounding GREAT)...
when I have to replace them I'll use 7025s (mullard reissue) for v1, TungSol for v2 and SovtekLPS for v3
 
The mullard in mine sound pretty good in the pre... Not had a chance to change the power