Hey racsanone,

I had the same dilemma a month ago! After following Areosplat's advice I came to the conslusion that I like the 15X4wide apc. Its a very funky prop and hard to find sometimes. Use a tach and set your Saito between 9800-10500static. Make sure the engine is properly broken in! This prop really slows the plane down to a comfortable pace for me. But.... when you hit the gas it really scoots I've got totaly unlimited vertical and canhover at 3/4 throttle. when I pull it back it will really creep along. Knife edge all day long ect... One word of caution! You have to be careful on down lines and straight and level flight to throttle back it might overrev. I fly 90% of the time about 1/4 to half throttle anyway so just be careful. You might also want to try a 15x6 pro zinger its about half way between a 15x4w and a 14x8.
Good luck
Justin