Pros
AVI-SPL still has some of the most talented engineers, programmers, and fabricators in industry under roof. Their experience includes numerous large scale, high profile AV installations across the US and throughout the world. The operational talent is very generous in sharing knowledge regarding the engineering, configuration and deployment.
Cons
This is an bureaucratic organization, some say overly, and management philosophy seems at odds with the constructs of operational efficiency and employee empowerment. They define rigid lines between job descriptions, which is limiting in terms of employee engagement and growth. While keeping design engineers chained to a cubicle might to generate drawings, schedules and equipment lists might seem to be efficient, keeping them out of the field means that they don't learn first hand from successes or failures. There are other examples, and I suggest that anyone considering a position talk with the employees in the office of interest. Be aware that each office has a distinct culture.