Either Samsung or dell. I've got a 19" Dell ultrasharp and its great. Ive heard nothing but good things about dell monitors, and you can get mine for 260 on sale with a 3 year warranty
But i dont know what dells deal is in Canada... so mabe not
edit: for canadians the 19 ultrasharp is $349(canadian) and it comes with the standard 3 year warranty... so i dont know if thats still a good deal for you or not because im not famliar with how much all of the other ones cost in canadian dollars.
Heres what youre looking at
Total Price Shipped $397.86
you could also get a 4 or 5 year warranty for some more money, 29 and 49 canadian dollars respectively