I’m  interested to know if you include the criteria of atmosphere, pay and benefits which would be the best company to work for?

A company where your boss doesnt ignore signs of bullying.  Suggests the victim leave instead of confront the issue . Pays you well . Treats you right. Gives praise when warranted but also dolls out harsh truths when needed. A place where you can turn up and enjoy working there for 8 or more hours 

Look at some of the perks that Google offers.

But seriously, a decent boss is always hard to come by. That is the main factor imo, not the company, pay or perks on paper.

Doesn't Virgin Australia often top polls for worker satisfaction?

How long is a piece of string?