Ok, Lets all be honest here, these are not the best bladders available. I used these for 11 years before switching to platypus.
They may be slightly more durable than the competition, but I can say with confidence the previous omega bladders that I owned were no more durable than my platypus big zip.
The cap sucks, it tends to leak unless you close it really tightly. Thus, opening the lid later is a struggle.
The bite valve tends to leak, platypus doesn't. The big zip is also lighter.
I was a big fan of Camelbak. I still have my pack, it's been to 3 deserts, many alpine areas, and has thousands of biking and hiking miles on it. Honestly though, now there are lighter, better bladders available. I hope camelbak catches up.