New Tung Sol KT88 vs KT120 Sonic Comparison?

[steve]

I am wondering if any have compared the sonics of the new Tung Sol KT88 vs the KT120? Both are similar in
conditions with ~13% difference in transconductance.

Since the same audio system is used, and similar conditions, the conditions are similar enough
for comparison.

Do they sound exactly the same or some sonic difference in your experience?

I saw where the price difference is only $7/tube, so I thought might be good to try.

Longevity is another question I  have.

Cheers

steve