Pros
At Visionist, it's been clear that they care about their employees from day one. Nothing over the past 5+ years has made me feel any differently. The benefits are amazing and the culture is fantastic. Management takes the time to make sure that you are happy. And if you want a change, they are more than willing to help you find new work that interests you. They embrace new ideas and fully understand that happy employees make the best employees.
Cons
Not all work is co-located, different contracts are at different locations. However, the company has a strong presence in their on-line collaboration space and there are plenty of after hour and team build events that you always feel like part of the Visionist family, despite sitting apart during the work day.