Also, for people interested in tube rolling, I asked Vlad and got the following:
"My other favorite tubes are 6N1P(EV). The ones with “rocket” logo are in general better than others. There is been some hype about 6N5P triple mica.I tried them, to me they sounded same as 6N1P. It is hard to say what was the reason, because from batch to batch tubes differ and sound different. For example I had 6N1P EV sounding better than regular 6N1P and bought same tube again. Obviously different batch and the new batch was worse than regular 6N1P. Also ECC88 Tesla gold pins(old Tesla production) used to sound pretty good."
"My other favorite tubes are 6N1P(EV). The ones with “rocket” logo are in general better than others. There is been some hype about 6N5P triple mica.I tried them, to me they sounded same as 6N1P. It is hard to say what was the reason, because from batch to batch tubes differ and sound different. For example I had 6N1P EV sounding better than regular 6N1P and bought same tube again. Obviously different batch and the new batch was worse than regular 6N1P. Also ECC88 Tesla gold pins(old Tesla production) used to sound pretty good."