Power tubes for Cary SLI-80

So I have tried KT88, 6550's and KT120's in my Cary.
Does anyone have any suggestions for alternatives to these?
My favs are GL reissue KT88.
I was thinking GL KT77's.

You could try El-34's.
The KT-77's are nice as are EL-34's. I liked the GL re-issues as well.
In my SLI-80 I liked the GL KT-77s a lot and other favorites were vintage RTF/Siemens and Tesla EL-34s.