Favorite Mods

I'm still pretty new (only 500 hours total), but I have gone absolutely overboard with mods.

My personal favorite is: Southern Hive Expanded

Favorite useful: Reduce Foliage/Improve Performance

Favorite gamebreaking: Advanced Training 100.

How about you guys?

Edit: if anyone knows how to link directly to the mod, I'd love to link. I will also fix the mod titles when I get home.