Board Thread:Questions and Answers/@comment-67.85.255.241-20130703022847/@comment-15575766-20140526232252

I'm not sure about upgrades but here's my response:

5. Monkey Buccaneer, 0/2

4. Monkey Engineer, 3/2

3. Banana Farm, 2/0

2. Monkey Apprentice, 3/2

1. Monkey Sub, 4/2 and 2/3

I consider these my favourite because they are the towers that I will most likely upgrade first, but it really depends which track you are on. For example, you can't have Monkey Sub on Monkey Lane because there's no water.