My kids and I have started enjoying BTD6 together.
I am experimenting with the upgrade Come On Everybody! so here are my notes about Primary towers.
Dart Monkey
0-2-5 costs 31K good for straightaways (target last) and ceramics
Boomerang Monkey
2-5-0 costs 45K good for midgame [cannot hit camo or lead]
one 2-0-4 set to strong for MOAB Press (from Boomerang 0-0-4)
Bomb Shooter
1-3-0 costs 3K good for blimps [need L4 for black, cannot hit camo]
Tack Shooter
?-4-0 costs 4K good for midgame [cannot hit camo or lead]
?-5-0 costs 20K good for late game especially with Pat Fusty [cannot hit camo]
Ice Monkey
one 4-1-0 costs 5K removes camo and regrow
0-1-? costs 3K, 5K, or 37K, get icicles by round 63 [cannot hit camo or lead]
Glue Gunner
0-?-3 costs 4K+ and made affordable by top path Village, combo with MOAB Press (from Boomerang 0-0-4) or with Bloon Sabotage (from Ninja 0-2-0)