I finally settled on the MSC 22-8. It has better down line braking than the Mejzlik 22-8 and 22-10. I also like the low rpm thrust the MSC 22-8 produces. I can't tell you why, but I noted that there was a difference in control authority in tight turning maneuvers with different props. Going to the 22-8 immediately ended what appeared to be a partial snapping condition in tight turns. Better prop airflow caused by the wider inside propeller blade section? I don't know for certain, but it worked great.

Some of the people running the DA 50 have liked the MSC 22-10 better for vertical pull out of a hover.

Consider getting an MSC in both an 8 and 10 inch pitch to see if one is better than the other for your set up. They are relatively low priced compared to a lot of the others. You can get them direct from MSC (www.mscprops.com), www.Troybuiltmodels.com, Desert Aircraft, and others.