TSLRCM tries to fix to the best of our abilities the issues The Sith Lords had due to being rushed. Containing a host of restored content and fixes many bugs left inside TSL giving you the most polished and best possible chance to get the full experience.
TSLRCM is fantastic, but the M-4-78 mod is an abomination.
TSLRCM deserves a 10 with the restored content that, aside from the Jedi Padawan voice-over, is flawless. On the other hand M4-78 is like the undead - killed by Obsidian, resurrected by the TSLRCM team, but just stumbles along with no coherance trying to eat the players brain.
The voice-overs are cringe worthy, the gameplay is incredibly boring, and the journal system is inadequate - most of the time I had no idea what I was supposed to do next. With more work it could become a good mod, but as it stands as soon as this playthrough is finished I'll be uninstalling M4-78.