There isn't really a
'best' mod. It's all just a matter of opinion. Ask Plystire, and he'll tell you that
Project Blue is the best. Ask knxrb, and he'll say that
Horror Mod is the best. Ask Hockeykid, and he'll tell you about
Fenix Mod. Snakemod, RPG Mod, EFX Mod, you get the point.
I have three mods right now; Project Blue, Horror Mod, and Fenix Mod. They all have unique features, and they all bring more to FPS Creator. Project Blue has the most commands out of any other mod as well as full screen shader support, Horror mod has
my favorite flashlight, and Fenix Mod has Dark AI, and melee support for Errant's GC Store weapons.
I'm using Fenix Mod at the moment, and I would suggest you give it a try, since it
is free. I would also suggest giving Project Green a try (a free version of PB, and also free), and I hear that Horror Mod will soon have a free version as well. You can try them all out for yourself, and then chose which one is best for you. you can also check each mod's 'official thread' for a more specific list of features that each mod has to offer.
Kravenwolf