I think the general recommendation is the Mullard 5AR4 for the rectifier tube and the 6H30DR as the input tubes. If you can't afford the 6H30DR tubes, I think the Electro-Harmonix 6H30 is preferable to the Sovtek 6H30.
There's a whole thread on tube rolling in Modwright's AudioCircle forum.
http://www.audiocircle.com/index.php?topic=56330.5
There's a whole thread on tube rolling in Modwright's AudioCircle forum.
http://www.audiocircle.com/index.php?topic=56330.5