Im a big choco-o-lic and I made my dream comes true by visiting a chocolate factory. Have a look at Genevieve Granbois chocolates one of the best chocolate maker in Montral http://www.tourisme-montreal.org/Blogs/Epicurean-Life/Genevieve-Granbois-and-the-Chocolate-Factory
updated by @katerine-rollet: 04/11/15 08:12:02AM
I really like the chai and salty caramel flavours. The chuao is really good but theyre $3.75 each. You could also try Les chocolats de Chlo (really funny website: http://www.leschocolatsdechloe.com/ ) and try the chili/cayenne hot chocolate at Suite 88 ( http://www.suite88.com/en/ ). Enjoy Montreal!