Good support from management with respect to comp time when working long hours. I've often worked quite a bit, but management was very understanding when this got to be too much and I needed time off.
The schedule is very flexible, with the ability to work from home one day per week, which saves on gas and allows for the usual office distractions to be taken away. Also, we have one off Friday every two weeks and management is not overly anal about hours worked.
Cons
Without having specific levels of our colleagues, it is tough to see potential for career progression, and therefore tough to scope out the salary potential for a particular position or group.