I've been to Kitchen on Sixth's original location before they moved last year. The new restaurant is bigger, the vibe is casual, and the food is great, especially given the price.
Food options are limited to less than 10 items on the menu - I've tried the Posh Mushrooms, the Eggs Benedict, and the Breakfast Poutine. All are pretty savoury and the food is very filling.
One of my other favourites is the drinks - all affordably priced (unlike brunch spots), you can get some great specialty ones for $3.50. I recommend giving the Strawberry Tea Lemonade a try. Prepared with David's Tea, and some sparkling Lemonade, it's a great drink along with your meal.
Service is friendly and quick. The waitress brought out the drinks and food in a timely manner and everything was delicious. Again, I'd definitely recommend trying this resto if you're in the area.