Pure Nickel strings.
They have a sound that I like, both very homogeneous over low E to high E and the length of the handle, a rather soft sound compared to what gives the game "Brite wires" of the same brand. Recent equip all of the original Gibson Standard, Traditional and Studio while "Vintages" are found on the Custom Shop Reissues.
This is the game I prefer Les Paul.
Note that these stabilizing ropes very quickly and keeps more agreement than Brite.