Pros
My VP was the BEST VP I've ever had and great communicator. My Sales Mgr was the WORST I've ever had. Culture is great and the name is strong but Gartner just isn't a "must have" in the IT space. When budgets are cut, Gartner is one of the first things that goes. There is room For advancement if you have < 8 yrs total experience, but if you have > 10 yrs selling C Suite, you'll likely be frustrated. CEO is a smart guy (ex McKinsey).
Cons
Gartner is very silo' and Biz model is very academic. Clients want "do'ers" not "thinkers" or a bunch of has been CIO's (called a variety of things like Executive Partners) who basically mentor CIOs. Lots of changes at the corporate level - several BOD changes and senior leadership changes = company in transition. Top sales person in CT (HQ) W'd ~ $225k (good $) but you can go anywhere else in tech and make 2-3x that if you're any good. I left bc of a bad mgr who was very immature, talked about high performing EE's behind their backs in front of the team. Not a place many would want to call home for very long. They sell at the enterprise level it NOT enterprise deals. Avg deal size nationally is ~ $33k. (Enterprise deals are >$1M)