I BOUGHT A DOZEN WHEN THEY FIRST CAME OUT AND LOVE THEM! AT THE TIME I WAS ALSO SETTING UP A NEW HOYT BOW, SO I HAVE NO COMPARISON TO MAKE. THEY ARE ALL THAT HAS GONE THRU MY NEW BOW. I HAVEN'T YET KILLED ANYTHING WITH THEM. BUT LOVE EVERYTHING ABOUT THEM SO FAR, FAST, ACCURATE, AND FROM THE TARGET SHOOTING I'VE DONE THEY DO PENETRATE WELL. I USED TO USE 100 GRAIN THUNDERHEADS BUT COULDN'T GET PERFECT FLIGHT WITH THEM. I WENT TO NAP'S NEW CROSSFIRES AND GOT WONDERFUL FLIGHT. THE ONLY DRAWBACK TO THEM I SEE IS THE SMALL SHAFT DIAMETER ALMOST FORCES YOU INTO A DROP-AWAY OR SHOOT THRU REST. IT WOULD BE HARDER TO GET ZERO FLETCHING CLEARANCE WITH A STANDARD PRONG TYPE REST. JUST MY OPINION. OUT OF THE 12 I DID HAVE ONE THAT WASN'T STRAIGHT. I THINK IT WAS JUST A DUD.