Oh lord, now you have got me jumping into the mix. My recommendation from the Great Frozen North (well not 'frozen', its almost summer) is porter (yes, with a lower case 'p'). And this is not just from a former employee (yes, biased) but they are fantastic. brand new D8Q4s, leather seating, 34 inch pitch, meals (well snack boxes) on all segments, most of which are just over an hour (you wanna see FAs hustle - watch these guys do full service on a packed -70 seats - plane in just about 30/35 minutes cruise YTZ to YOW), complimentary wine and beer, actual glass glasses and china mugs...and this is for a single class cabin.
Crazy thing, they usually are on the routes they fly, the same price as or cheaper than their US or Canadian counterparts. And those Q400s can move. Consistently beat ACs 320s gate to gate on the Toronto/Ottawa and Toronto/MTL runs and you get off right downtown TO.
okay, enough gushing....they just rock.