RTK, they are pretty close, the 110 and 106, depending on how the 106 is setup. My friends 106 on cans mejzlik 28x10 at 7150, thats pretty stout. My 106s have been stronger than my 110, even my stock 106. The advantage of the 3w is able to go up in prop and not drop off too much. Each has its place, I would go with a 110 on a 23lb plane or so, but on the larger 35% planes I would take the 106, but thats just me. One thing to note is how the engines are refined, the 110 is balanced well, ports are big, etc, more so than a stock 106. Now look at a 3w 106 with all those refinements, and thats a different motor. Back on track, I just cant believe 28x10 BME at 7K +, maybe extreme circumstances running the 110 on full pipes, but thats pushing it.