Pros
Berkshire is a very dynamic company. The word "dynamic" gets thrown around a lot in the corporate world but this company nails it. They (we) are always actively seeking out the latest trend, the latest avenue to gain a competitive edge. We are honest with ourselves about our strengths and our shortcomings and we take input from all levels of management. We have a strong history of developing talent. It is not unusual for team members to leave Berkshire to assume higher levels of leadership in their next company. And sometimes it's not long before they are back and/or expressing regret about leaving. This company is sticky. I started with Berkshire back in 1994. After a few days I told my wife not to worry....that this job is just temporary until something better comes along. Still waiting.
Cons
Whether this is a con or not depends on your goals. The culture at Berkshire is one of upward movement. Climbing is hard. So if you aren't looking for a challenging job this company would likely not fit your needs.