User blog comment:Sam Wang/BTD5 - Tips For Reaching High Rounds/@comment-3153244-20120808070404

Firstly, as you may know already, you can earn cash using 4/2 BRFs easily up to round ~90. It's best to start using 2/4 Snipers after a few rounds in the 90s. As Spike's userpage says, "It (Supply Drop Snipers) can make very large amount of money, even more than Banana Farms can, if rounds are long enough. Also, Sniper Monkeys are smaller than Banana Farms so the player can build more of them in any area. And, of course, Sniper Monkeys can attack Bloons." Theoretically, filling up as much of the screen with Supply Drop Snipers can earn you millions of dollars. Get your income up before you build your maxed temples. As Iyreguy once mentioned to you, Cripple MOAB Snipers are also excellent for freeplay in between the gaps. MOAB Assassins/MOAB Maulers are also good choices for an average price. 2/4 Ninja Monkeys will be necessary for high rounds in freeplay when the bloons start moving at a much faster speed.