Although a little bulky, the Neutrik (or Speak-On) is the best high current connection you can have on a tower speaker by a country mile. So get the direct/correct replacement part. With the Neutrik you have a 360 degree pressure fit. But the connector is only as good as the quality of terminations. Better execution in making up those connectors should resolve that. And if you see any evidence of corrosion use dielectric grease. Make sure you have found the problematic side, whether it be the male or female connector.