Pros
Ability to work with highly talented colleagues. Symposiums and conferences are class acts. Interact with clients across industry sectors, geography and size. Ability to influence industry. Opportunity to connect with "movers and shakers." Attention by media. Research communities that depend on collaboration--results in innovative thinking.
Cons
Changing research objectives. Performance metrics on such things as presentation scores, number of Gartner Internet hits received on your research... displayed on Intranet for all Gartner associates to view. Management encourages competition among analysts. Many analysts burnout as a result of the stress of performing. Overbooking of available time. Working into the evening and on weekends are considered the norm.