I have just returned from an eating sojourn to PEI and Quebec City. The places I ate dinner in Quebec City (in order of excellence, IMO) were:
Toast (an almost magical meal in a very pleasant restaurant setting)
L'Utopie (comfortable restaurant, innovative—almost avant garde—food that was tasty and visually delightful)
Initiale (a bit disappointing; items in dishes seemed not to all be well-thought-out)
Yuzu (trendy place but terrible food, expecially if you have respect for Japanese cuisine).
Also had a fantastic breakfast at Café du Clocher Penché. I have written detailed descriptions of these on my website, including a review of the PEI places too. Hope to add photos soon.