I really like the
Thomastik-Infeld CF30 - 4th string (D) .030 chrome steel flat wound for low F (I tune my tenors in Bb.) I got mine as part of these premixed
string sets reccommended by UU user hollisdwyer , which also have a flatwound Thomastik-Infeld C string.
The wound strings are rather smooth and have very little string noise from dragged fingers.