Ink vehicles having improved gellant solubility and ink compositions including such ink vehicles are provided. Exemplary ink vehicles include first and second co-monomers, and a gellant that includes that includes a curable epoxy-polyamide composite gellant; in which the first and second co-monomers are radiation curable are different from each other. Additional exemplary ink vehicles include at least two chemically distinct gellants. The chemically distinct gellant materials include a first gellant that includes a curable epoxy-polyamide composite gellant, and a second gellant that includes an amide gellant. Methods for making and using these ink vehicles and ink compositions are also provided.