I've been here twice now and I have to say that I was impressed both times. Kokoro is a small takeout space (with a few spots inside and a couple of outside seats) that serves up some pretty good sushi at very reasonable prices.
I ordered two combos from them this past weekend, and the order was ready within minutes. The sushi rolls were a good size, and the sashimi was fresh and tasty. The price was fantastic as well. The highlight was the spicy salmon roll, as many others here have mentioned. It's probably the best I've had in this city, with a good amount of kick, which means serious flavour. Really enjoyable. They are quite busy though, lots of people kept coming in to order takeout or to pick up. But the wait time was next to nothing, so I'm thoroughly impressed. Don't look any further for good, affordable sushi in this area.