I believe you're being informed unilaterally and have to speak in favour of OWFS, which is where I work. I cannot compare ATK and OW on any scale as I have no experience with the former, but you need to keep in mind that especially OWFS is build around content specific collaboration on a global level. Project teams make extensive use of mail-based discussion rooms with content questions, and I'm always impressed how much response comes back from personnel at all levels. Also, keep in mind that a major part of our compensation is shared across the firm (we have a shared bonus pool that yields 60-70% bonus on our base salary), and you sense that people have a strong interest in the entire firm doing well.On a more junior level (I joined recently), you sense a collaborative environment among very strong performers. Therefore, I'd be careful with your decision based on the input you got so far and wish you best of luck with your decision.