Micronauts (1979) - make sure it's the first series written by Bill Mantlo, with Michael Golden pencilling the first 12 issues.
Ka-Zar the Savage (1981) - I loved this series. Written by Bruce Jones, art by Brent Anderson and others.
Kull the Conqueror (1982) - 2 issues by Doug Moench & John Bolton, then
Kull the Conqueror (1983) - 10 issue series by Alan Zelenetz & Sal Buscema
King Conan (1980) - I preferred these over Conan the Barbarian or Savage Sword of Conan. Written by various, art by various.
Omega Men (date?) - Written by Roger Slifer, art by Keith Giffen.
Complete runs of each should be fairly cheap! Hours of great entertainment!
Act now!!!