Speaking from a luthier's perspective. Hot hide glue at number 1. Titebond original at number 2. Titebond 2 and 3 not used due to cold creep over time on stressed joints and much more difficult to reverse. Titebond 3 is used for glueing purflings to bindings prior to bending as it tends not to separate like Titebond original does. Fish glue is great for climates that don't get overly humid. Both fish glue and hide glue don't require a major clean up prior to re-gluing of separated parts as it sticks to itself. Bottled Titebond hide glue not used because of a number of catastrophic failures at unpredictable times. Old Brown glue occasionally used with reservations and suspicion for any important, stressed joints.

Darrel