Pros
Most co-workers were very smart and respectful people. Wages were very competitive. Culture thought "outside the box", which was a great change from what I was used to.
Cons
Work/LIfe balance was very heavy on the work side. My group was expected to work 10-12 hour days on a regular basis. One of my co-workers was working over 18 hours straight one day. The long hours were due mainly to poor software. My department used in-house IT, which proved to be very unreliable. I recomended contacting in IT support to fix the issues quicker, but the idea was ignored. The long hours were not thought of as being a problem, which was the sign I needed to find something different. If I am going to work 12 hours a day, it will be to make myself rich, not someone else. Koch is a private company, so none of the employees have ownership.