i dont know about fastest, but strongest... just about. ive been shooting the ST Epics for about 2 months, and ive only managed to break one, and thats because i slammed two of them together, really hard. i just switched up to the easton flatlines, and they are supposed to be one of the fastest arrows on the market coming in at 7.4GPI. im going to shoot them this weekend and see how they do. but the FMJ's are excellent arrows none the less. good luck with them.