Took that plane out today and tried the 10x6 just for the heck of it. As everybody said, it was way too much prop, but it made a cool sound
Actually, the plane took of very well (much better than the 8x6 or even the 9x6) , but it bogged the engine down if I tried to climb too fast, as expected. The LHS also recommended that I try a 10x4, but I ran out of time today as my wife was waiting for me to take her to Home Depot. They also said that since APC props are more efficient than MAS to try a 9x8 in that prop to continue my experimentations, so I picked up 2 of those with 2 10x4's. I still did not get any 9x7's because they got cleaned out before I got to them

I think it's time to find a new supplier of them 'cause they are always sold out....
I'll post my experiences with the 2 new test subjects as soon as I can.