I received my Camelbak BFM 500 this week and I have to say I could not be happier with it.
This backpack is large and in charge. It has enough room for all my hunting gear and then some. I know I could pack this for a three day trip anywhere or as the perfect bug out bag.
It is well made, the zippers all have pull tabs and there is molle webbing everywhere to attach even more gear. This bag is not cheap, but you do get your moneys worth.