By the way, the middle path ability makes the chef serve and attack 50% faster, named Order Up! Look at my designs and ideas! Icons are the blue circles. Hover over them to see whatt they do. The Price for each upgrade and base price is at the bottom left. The upgrade name is under the photo.
Top Path is good for general bloon cleanup, but struggles in higher rounds with MOAB rushes. Middle Path is good for boosting monkeys while making small income. Helps out a lot in the later game, but does not do much damage on its own. Bottom Path is good for pure damage. They attack very quick and hard, easily decimating MOAB-class bloons. The Paragon deals overtime damage, buffs monkeys, and shatters MOABs while being on the cheaper side. (5th cheapest in game)