I never heard a 101 tube, but I really like My Cayin A88T that uses 2 6sl7, 2 6sn7, and either 6550 or KT88 power tubes. It sounds wonderful and I discovered the 6's make as much of a difference as the power tubes.
Changed/preferred KT88's over 6550, easy.
Mistakenly put 6sl7 in 6sn7 position, blew one,
The 'right' 6sl7 and 6sn7 is a wonderful thing. I tried some from Brent Jesse, hated them, waited till after burn-in, exchanged them for full refund for some that sound wonderful.
I would ask Brent what he thinks about the variety of sound you can expect among 101 choices.
btw, do you have a simple tube tester?
"you'll be happy for the rest of your life if you make an ugly tester your wife".
name that song!