With speed comes vibration and a more harsh draw cycle. I shoot a Drenalin now and love the draw cycle but it's slow. I went the other day and shot a Reezen 6.5. I set the Reezen 7 lbs lighter on the draw weight and 1/2 inch short on draw length and got about 10 feet a second better speed. With the lighter draw weight the draw cycle wasn't near as harsh and the vibration was alot less. It's a give and take. For years now everybody has been on Mathews for not keeping up with the speeds of other bows well now they've made the fastest single cam bow on the market but it comes with a price. I'm ordering a Reezen 6.5 next month.