I am a Hugh fan and admirer of Milt Jackson and have a sizable collection of his recordings. I don't have any from the Roost label/mono era but will seek them out. My recordings of Jackson are with him not with the MJQ but with others. I believe that the MJQ format actually restricted his talents and often held him back. His efforts with Wes Montgomery, Ray Charles, John Coltrane and Ray Brown for example are all excellent.
Charles