I heard that MAS props tend to bend unlike APC. APC's are more rugged and solid. I enjoy APC on the other hand I also wanna try MAS. In the past I used the Thunder Tiger's 11X7.7 and I still have it with no broken or chipped tips. I still have Xoar 12X6 or 12X7, still in good condition, and I gotta say TT and Xoar they are really good props. I'd certainly use 'em.