Pros
Probably the most creative group I've ever worked with. Their out of the box strategic approach to corporate challenges is second to none, and they reward you for what you bring to the table and not simply for the title or position or roll you fill. An outstanding organization!
Cons
Location. Traffic is a bear. Being in the middle of the 128 loop is a challenge. If you don't live 15 to 20 from Waltham, you may want to consider another option.