I just wanted to make this post to encourage RMC folks out there to pick up the RMSS book Creatures & Monsters.  The book Creatures & Monsters is one of the finest improvements that RMSS made to the game.  It is basically C&T I, II, and III all rolled up into one (minus the "Treasures" portion). The way it is laid out is very nice and I find that how each creature description also includes all the creature stats at the top is a great improvement over having to flip between the creature description and the big creature table for each section (as it is in C&T).
Now here's the interesting part....as near as I can tell there's no difference between the monster stats between C&M and C&T. There *may* be some here and there, maybe more so with the races, but I doubt it. Check the OB of any creature - they are identical between RMC and RMSS. The idea of there being substantial incompatibilities between the systems is a myth. RMSS changed the power balance between CHARACTERS from RM2 to RMSS, not for MONSTERS. All the tables, stat blocks, etc..in C&M are all exactly the same as in C&T.
I think that most RMC users probably assume that C&M is not compatible with RMC. This is unfortunate because C&M is the far better book with more info, more complete info, and better laid out info then C&T.Â
So if you are an RMC fan and are hoping to get your hands on a C&T II or III...don't bother just buy Creatures & Monsters.
YMMV.