Pros: Military grade...it doesn't leak or fail.
For approximately $2 (and sometimes less in bulk) this bite valve/hydrolock conversion kit does what no other bite value does: It does not leak. It also snaps apart by pushing down on the gray release button making it easy to completely drain and dry the bladder and hose. These retail for $10, but sell discounted for about $2.00 each at some military outlet stores, Amazon and EBAY. I converted my ski and hiking hydration systems/packs to this valve, and have never had a problem. You can retrofit Camelback and most other systems.