Cat5 vs Cat5e vs Cat6 Which Should You Use? Network Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended. Cat6 is recommended.