Me and 3 of my friends all bought the verve 9L a little over a month ago. We use it mostly for mountain biking (3-4 times per week) So far, 3 of us (including myself) have had to replace the mouth piece because it cracks super easily, causing water to leak everywhere. I have gone through two of these mouthpieces. No, none of us are bitting super hard or have ultra sharp teeth. Today the bottom of my bladder started to leak and by the end of my ride My back was completely soaked. Not fun. :( I really like this pack comfort wise, but I might end up going back to my Camelback since it is more reliable. I really did expect better quality from Osprey since I have two of their other expedition packs which are phenomenal.
Hailey the mountain bike enthusiast
British Columbia, Canada