Higher Ground is usually a good place to go, have some food and watch people. We have found that it's not really a great place to work or try to have a conversation as it's usually it's packed back to back with people. But watching the hustle and bustle (and variety) of Kensington denizens this is the place to go.
The food is reasonable, and they put some twists on those coffees we all love - you know the ones that taste so good, but are so loaded with calories. I've never had stellar food there, and only a few times have had speciality coffees that I really liked. I would definitely say Higher Ground is a destination location rather than a culinary location.
But if we are in a hurry, or want a few quieter minutes we are sacrilegious and visit the Green Mermaid down the street.