Vantaggi
It's consulting. They have free things like baseball games or food. They buy you lunch every few weeks. If you like volunteering or developer councils, they've got that. They like participation. They won't fire you between clients. You'll continue to get paid. This can be a pretty big plus if your skill goes out of style. They are upfront about company financial numbers. Rather than working directly for an account executive responsible for selling you to a client, you also have a "resource manager", whose job is to keep you happy. If you are stuck at at awful client, their job is to keep you with the company. Complain enough times, and you can be reassigned to another client. They will pay for conferences (but you usually have to take 50% of the time as PTO). No pressure to join the extracurricular activities. If you don't want to go, they'll generally accept any excuse. You bill 8 hours, and then you go home. They are very honest about this, and won't make you work 10 hours and bill 8. There are better places to work, but most of them aren't IT consulting firms.
Svantaggi
It's consulting. Complete with the "awesome folks" and the kool-aid. Work for any consulting company for a while and you'll know what I mean by kool-aid. Their folks are no better than any other shiny IT consulting firm, although on average they are better than the big staffing firms. They have a few horrible developers that made it through the screening process. They really push Liferay, because it's profitable niche software. This may be your thing, it was certainly not mine. Despite the kool-aid, when certain account managers or members of the leadership really want you to keep/take a job, you will face all kinds of pressure. It could be 60 miles away from your house, but you're a team player, aren't you? You'll get every dirty trick in the book, and then some. If you don't cave, they won't fire you, but you will get that nice persona-non-grata feeling. You get about three weeks off plus 6 holidays. When you've been at the company 5 years, you get about four weeks off. Pregnancy/nursing leave is unpaid.