It used to be Vans but I bought myself a pair of Adidas Superstar a few weeks ago and they're probably the comfiest shoes I've owned, so I'll go with those.
The people I work with, probably. I hold so many job roles in the place that the roles themselves all just kinda mesh together but the people (both in the training department and on the floor) are all such sweethearts and make the place such a lovely place to work.