TAD 60 Power Tubes

It is about time for new power tubes. What have you TAD 60 owners used and what did you like and why? Paul G is high on the Valve Arts tube. I have used JJ KT77, EH 6CA7 and the Cayin Branded EL34. Of these the Cayin's are my favorite.
SED Wing "C" EL34's are very nice in the TAD 60. I also really liked Valve Art KT88s