Cafe looks black in many situations. In good light, it's easy to see that it's very dark brown - like dark coffee, but in lower to medium light, it does look black.
The truffe bags that I saw were way lighter in color, and had strong taupe undertones. Think mushroom. When next to a couple of different caramel bags, though, I could really see the golden brown in the truffe.
I came home much more impressed with the cafe, but it would depend on what you're looking for. I ended up getting caramel as a brown neutral - but the caramel is definitely brownish/goldish with some almost orange undertones in it - not what everyone would consider a neutral. The cafe does indeed look like its black - the SA had to point out to one lady that it wasn't.
As for the 07 blacks, some say they are dry-looking, but I think they are a soft black, with strong silver and gray undertones, which I like. They are sparkly and night-time looking and very, very light to wear. The cafe looks heavier, basically, in tone - whether it is really or not, while somehow this year's black is lighter in tone than cafe.
I may not be making sense.