Pros
Although the culture is changing due to some acquisitions, it's still a great atmosphere - people are treated well, paid well and the benefits are very good. I think people forget that there are "issues" no matter where you work, and ER overall has been an excellent employer as far as I'm concerned.
Cons
My only negative comments have to do with other employees who seem to have too much time on their hands and choose to pick on every little thing and complain, or start rumors that are just that - rumors, not based in reality. At times it feels like we're back in junior high school because of this, but that happens at most other companies as well. The grass isn't always greener on the other side, and if you think it is, go check it out.