User blog comment:Sam Wang/BTD5 - Tips For Reaching High Rounds/@comment-3153244-20120808070404/@comment-4316832-20120808070706

That was almost exactly what I'm doing now. But your comment reminded me of the MOAB Maulers, since I used the space for Ray of Dooms, although Ray of Dooms are stronger, and more expensive. Ray of Dooms use more space than the Bomb Towers, but Bomb Towers do 10x damage to MOAB class bloons, so which one will you prefer?