IronCross

Forgot to mention. Your other best friend when it comes to improving vertical or swinging more prop is Cap'n nitro.

'sigrun von Braun'

PS: Larger diameter = greater propeller efficiency at lower flight speeds (high drag airframe) ipso facto increased thrust.

Not knocking Magnum as indisputable bang for the buck, but a 70 Surpass performance equivalent? In Sanye's 2007 dreams mayhaps.