Truth be told, most of the TF, Zinger, MA, and APC props just aren't all that good for large plane flying. Yea, they will get the plane in the air but usually will come up lacking. With the APC's, you really don't want to be drilling the things for a mulit bolt hub. If you do don't be standing close when they are turning on an engine.

The best performance with any airframe/engine combination will come with experimentation. When you ask someone for the "best prop" for an engine you are receiving subjective information based upon the one person's results. It either suited him or did not. You truly don't have a clue how it performed in any area other than rpm unless a thrust determination was also made. Spread sheet thrust calculators can come close, but are not very accurate in measuring real "in flight" performance in all the areas that a propeller effects, which is many.

Essentially be prepared to spend some money in trying props in different sizes from different manufacturers. It will be expensive, but worth it. If you are unwilling to step up to the plate and do this the only performance you will ever experience will be that belonging to someone else, with a high likelyhood of never having the best performance that you could. Look to the better prop manufacturers such as Menz, Bolly, Mejzlik, Fuchs, Biela, 3W, **Xoar/NX/BME/WildHare (all the same prop)**, TBM, MSC, and PT. Forget you ever knew Zinger, MA, and TF ever existed. Now that you've stepped up, they no longer do for you. Remember that rpm does not always (or often) correlate with thrust. Frequently lower rpm provides better performance for many things. Other times higher rpm provides what is desired.

Those that make the step to gassers usually do so because they are going to fly larger planes and require increased performance levels across the board. That performance will not come on the cheap, and those unwilling or unable to spend the money will never see the performance they desire. You hear them crying all the time looking for a cheaper engine or other product.