RE: Who has the power?
The Pletty 30-09 is a brute. I propped mine down (20-13) from the start to keep the current reasonable. Performance then seemed equivalent to the 30-10 with a 21x14.
I got to fly John Gayer's Wind with the Hacker Q-80. That was the strongest pattern setup I've ever flown- ballistic if needed/wanted! Don't recall what prop he had on it.
Dan