I visited Cargo Coffee for the first time during the Savor South Madison Taste Race and enjoyed the experience. I ordered an Atomic roast and I would rate it on par with Colectivo Coffee (and that is a good thing).
Things I liked:
* Free wi-fi, which coupled with the powerful Atomic Roast provided for an extremely productive afternoon
* Small but delicious selection of bagels and pastries
* Outdoor seating
* Drive through window
* The pleasant, efficient staff thoroughly explained the different blends offered that day to this appreciative first time visitor. They also have a great rapport with the many regular customers that filed through the shop over the course of the afternoon.
Things I didn't:
* The interior of Cargo Coffee is a tad on the Spartan side. While I give them credit for converting a former Jiffy Lube oil change building into a coffee shop, the tile floors and small, wooden chairs are not the most inviting for an extended stay.
I definitely plan to return when I am in the area. The quality of the coffee and the friendliness of the staff more than overcome the austere setting.