Pluspunten
Excellent relationships across Microsoft and its partner ecosystem, meaning there is no shortage of work and projects are usually more than a few short months and thus more stable than at some other consultant shops. Colleagues are smart, capable and helpful and in general it is a pleasant work environment. The President is an ex-Microsoft employee and has been running company the past 10 years - so he has plenty of relationships and business to draw from.
Minpunten
Not a good place to be if you want nothing to do with Microsoft - the core of their business. Other than that, I can only say that they've treated me very well and I'd recommend them. I left to explore a new direction in my career, but otherwise I would still be there.