Thomastik-Infeld guitar strings are commonly considered the highest quality manufactured today.
These strings have a round core with a nickel round wound winding and probably the only round wound set that can be called a jazz string.
They deliver a nice jazzy tone that is just a bit brighter than the flatwound string. The sound has been described as having "piano-like" clarity.
The Bebop set is a great choice for anyone that wants a jazz sound with slightly more edge.