Be aware that all my readings are at 4,900 feet elevation. Your mileage will vary. Stock muffler. I back the needle off around 300 RPM from peak on the ground, but as the props vary in their "sweet spots", there's a variance of 100-300 RPM from that planned off-peak reading.

9x7 APC: 15,000 (15,500 with a Tower muffler with no baffle, but man, is it ever noisy!)
10x7 Top Flite PowerPoint: 13,000
10x8 APC: 12,100
11x6 Top Flite PowerPoint: 11,800

I fly a 7lb Great Planes Patriot 40 with this motor. The 11x6 works really well at keeping the vertical going fairly strong (not unlimited due to altitude), but the 10x7 hauls the plane around with authority, yet gives a nice pitch speed too for speed planes. The APCs are way quieter than the Top Flites, too.