Agree. A BOB is not one size fits all. They are situationally specific -- who, what, where, why, how are all relevant to what goes in the BOB.
who are you and what are your skills?
where are you and where are you bugging out to?
why do you need to bug out?
how are you carrying the BOB and how are you bugging out (on foot,,bicycle, motorcycle, car. . .)?

Once you get those Q's answered you'll realize that any ready built BOB will be inadequate for most situations and good in very few. Putting your own kit together is the only way to go.