I had no idea that the Drenalin was 20 fps faster than the XT. I had a customer come in that had an XT. He liked the Drenalin but wanted to make sure it was faster. I assured him it was but he says let's go the the chrono. I shot both bows and the Drenalin was bounced between 19 and 20 feet faster. I liked the XT but this suprised me.