There are many Top Companies out there but you need to know what makes them top and how that matches your values.
 

DDI a leading HR development company defines a key aspect of interviewing and hiring as Motivational Fit.  How will the person fit in with the environment?  Will he or she like working in teams or alone?  Will the rural location be a turn-on or a turn -off?  Will a start up be a happening or hellish place?

www.ddinc.com

I can clearly see this in my own career.

I loved working for a small consulting company in London because I was working with like-minded people, was in the center of trendy Covent Garden and got a lot of freedom to manage my own projects.  Whereas I disliked working for a premier consulting because I found it too big and too impersonal.  I didn’t like working for the “Top Consulting Company”.

Another example of top company which didn’t make it onto any lists was when I did some filming for an industrial video in a haircare products factory.  The company was fairly small, privately owned and not know to be the top place to work.  But the employees liked working there because they liked the founder and owner.  He seemed to care about his employees, knew their names and their family history.  That's big!  And it was big enough to make people say this was their top company.

And I met with some people who worked for a children's charity who seemed to think this was a top company because they loved the mission - helping kids. 

Top company must be the top company for you.