I thought I'd add my 2 cents to this old thread, since I'm the new owner of the Circle Strings tenor guitar, anxious for its arrival from Blane, Wa.
I will use Thomastik-Infeld wound nylon w/rope core for the B and E strings. .016&.024.
For the D and G, I plan to use Daddario. .028 &.022.
I...