Board Thread:General Discussion/@comment-25072568-20150208053303/@comment-3153244-20150210032357

Boomerangs were extremely useful for Rainbow rushes, until the nerf, reducing their pop cap to around 40.

Ninja Monkeys used to be quite bad, but I'm not sure how well they do in BTDB nowadays.

I reckon Monkey Apprentices are horrible, except for beginners who don't have everything unlocked yet. Their whirlwind upgrade can be exploited by attackers with Regen Bloons, multiplying them dramatically. They also have a relatively low number of bloons they can quickly pop at once.