Pros
Diverse across specialties, skills, experiences, age, etc. Solid company culture that has something for everyone - it's not forced and the Culture Committee does a great job of keeping the culture authentic versus trying to be trendy. People talk to each other about things outside of work and everyone cares who you are as a person when you aren't at your desk. One of the best work-life balances I've experienced in agency life. People take time for lunch or a few small breaks. There can be early mornings or late nights or even weekends depending on what a client has going on but that's the exception not the rule like other agencies that expect you to live and breath your job. People come in, stay focused, work hard and do good every day. Compensation is in line with other agencies if not slightly better when it comes to equality of compensation at each level. Working for an independent company means the people who you see every day are influencing your promotions and pay increases, not a holding company that's more concerned about profits than they are about you're well-being and happiness. There's more opportunity to grow and learn as you're ready, with that comes increases in compensation and more opportunity.
Cons
There are a few "growing pains" still being worked on post-merger but that's to be expected a year and a few months out. When you have to dig for negatives at your job you realize anything you come up with is spilled milk, and that the grass probably isn't greener on the other side.
