What is the difference between “stranded” and “solid” conductors?
Solid conductors are less flexible but provide superior control over impedance. The reason for this is that solid conductors have smooth surfaces that allow more consistant spacing between the conductor and its shield/ground, and this is what determines accurate 75-ohm impedance. The only benefit of stranded conductors is that they are more flexible and better suited to applications where the cable will be constantly moved around.
