Decided to start with a set of Tung-Sols 6SL7 and 6SN7 ... Definitively easier on the budget and I guess still a decent set of first steps into tube rollingCheck this post, earlier in this thread, as far as I remember, the author of the post has done some serious tube rolling before settling of what he found best to his ears.
https://www.head-fi.org/threads/quad-pa-one-valve-headphone-amplifier-and-dac.734760/post-14052232
