Last year a fellow brought into our shopamid 1980's Martin Safari Custom Special, it was a 100 pound bow. We tested it along sidea 70 poundMathews Drenalinwith the same draw lenght.We shot several arrows rangingfrom 400 to 600 plus grains out of both bows. The result was time after time each arrow was faster out of the Drenalin. Its amazingto think aboutthat in as little as 20 years a 70 pound bow, could outshoot a 100 pound bow of yesterday. Not only that but theMartin Safari was very heavy, and had a lot of hand shock as well asnoise. Compared to the Dren which is lightweigh, fast, smooth and quiet.BTW the Dren is no speed bow either,its fast, but its nothing compared to the speed bows mentioned above by bigbulls.