System is a good place for Saturday nites. When in Toronto though, you must make a pit stop at Turbo on Friday nites. Awesome music on both floors and I know Josh Wink is going to be there Sept. 29 for a session. Another place to go on Friday or Saturday is Element. Other places I have heard are good but have not tried yet are Audiowerks, Volcano Room, Spin Lounge, Space (late nites), 5ive, Mad Bar, Living Room. Hope this helps!!!