As for inserts, they are worth looking for but mainly in AU or UNC here is the current insert list for the journey series
Knight-Thiessen 2000: FDT(9-9.6M), FDU(9.24M-end), FDV(9.1-9.86m), FDZ(9-9.6M)
Knight-Dodge 2001: FEA(9-9.72M), FEC(9.8-end), FED(9.44-9.78M)
Knight-Dodge 2002: FEH(9-9.98M), FEM(7.52-8.2M), FEN(2.5-2.56M), BEI(1-1.02M, 1.08-1.12M, 1.14-1.16M)
Jenkins-Dodge 2003: BEK(9.5-9.6M)
Hope my two list helps sum up current findings