Jeff Mikaelianwrote a review of CamelBak Crux Water Reservoir on March 19, 2017
Familiarity: I've put it through the wringer
Camelbak has always been tinkering with their reservoirs. They have gone back to a threaded cap and the new handle you can actually get a good grip when that cap is on a bit too tight.
The Most noticeable change is the angle of the bite valve. Before at 90 degrees and the sticky rubber would hang up on any and everything and hold on tenaciously. The new 45 degree angle alleviates most of that. And less obvious that they increased flow by 20% for a Bigger drink.