Pros
Work is diverse and interesting, compensation is pretty good for the industry. Company has traditionally had a family feel where it is easy to have congenial relationships with HR, IT, other groups, etc. Champions cutting edge technology when possible, always looking forward. Very flexible schedules are possible as well as telecommuting.
Cons
Company is growing really fast and culture can't keep up. Although they espouse ethical behavior, it really depends on who the AD is, what the project is, and where the money is at. Senior Management says one things, but clearly champions keeping the money rolling in rather than drinking their own koolaid of only accepting the "right" kind of clients. If you have a good manager and team, things are GREAT! If you are on a crazy project or have ineffectual managers, you are screwed. There is less stability than they say--if your project ends there is no guarantee that you will be moved to another team or if you are that you will be doing what you really want to do. Again, it all comes down to your managers and who advocates for you. Aquilent assumed very little risk during the government shutdown--if your project was shut down you had use your own vacation or go into the hole and then not get paid. This seems unfair for a company that only works with the federal government.