Most Canadian brokerages charge the same commission so its not often you'll choose one over price. The two that are a bit less expensive (questrade and interactive brokers) offset any savings with less staff and, in my experience, poorer customer service. Considering your expected # of trades, potential savings will not be that big of an advantage to you. I would go with the brokerage that offers best customer service - TD. As a side note - if you expect to be investing in dividend paying stocks I would suggest you enrol in a DRIP - Dividend Reinvestment Program - instead of paying you cash for your dividends they will use the proceeds to buy more stock.
