Sushi Marche just opened in lesliville a few months ago. Located on Queen E between Pape and Jones. They really only do takeout even though they have a couple of tables. The sushi is made fresh when it's ordered, so don't be turned off by the take out and plastic containers.
I ordered the Sushi Sashimi dinner ($28) includes 6 pieces of sushi, 10 pieces sashimi, Kamikaze roll (or california roll) ans salad (or soup). I also ordered 3 different rolls (about $7 each); eel/avacado, asparagus/shrimp tempura (nice hint of lemon), and spicy salmon. It was more than enough for 2 people.
The fish was very fresh with generous portions of sashimi and sushi. The roll diameters were small but you get 8-10 pieces, most of it the actuall ingredient rather than a thick rice roll. I found the take out containers actually had better presentation than most run of the mill sushi restaurants. Each container included a couple of little kumquats(?) in the husk which was a nice treat at the end.
Without the overhead of a full restaurant, they seem to be able to focus on the quality of the sushi and providing value in the food rather than other decor and waiters.
If ordering on a friday or saturday i would recommend calling the order ahead cause it'll take about 1/2 hr to prepare. They get pretty busy over the weekend. There's no website that I know of so you'd probably have to order once in person which is what I did, then you'd have the menu handy.