I used to come here all the time during my college years as typically they had the best prices in Toronto for animation grade pencils, markers, sketchbooks, you name it. Their stock is huge and the prices are great. Also they restock all the time, so there are rarely empty pegs for art supplies that are essentials for you. They also carry other things like toys, costumes (for halloweeen), note books and other odds and ends other than artist tools.
The staff are fairly helpful and know a lot about the products they are selling. They often ask if you need help and it's very easy to find staff in the store. The same can't be said for places like Curry's or Michael's. The check out is also very quick and painless and there never seems to be a huge line up when paying.
They have clearance items on occasion including stretched canvas and marker packs, which end up being a great deal. Be sure to come here with some time to spare as you can get lost looking at all the art supplies throughout the aisles! I'll definitely be coming here for any artist tools I will need in the future.