The Crux wins our Best Buy award because it scored very highly, is extremely easy to fill, easy to drink from, and one of the least expensive bladders you can find. It is also comes with a limited lifetime warranty which further enhances its long-term value. We highly recommend this bladder if you're on a budget and if don't mind a little extra work cleaning (if you use sports powders). If you're willing to spend a bit more and want the extra features of a pressurized system, check out the Editors' Choice Geigerrig Hydration Engine.
The Crux replaces the CamelBak Antidote. There are three key changes that we note below.
The Crux is latest Camelbak bladder in a lineage that goes back decades; it may be the oldest running hydration reservoir. Over the years CamelBak has continually modified this bladder. Compared to earlier versions, it now has a large wide mouth opening, large grab handle for filling, two chambers for water so it sloshes around less, removable hose and drying plastic tabs. The bite valves were also our favorite. Not too big, and not too small. We also liked that the bite valves weren't as easy to come off and lose like previous models.