I will suggest you Melbourne would be better. I live in Melbourne, and no matter where I’ve traveled in the world I’ve always been grateful to return. Melbourne is amazing, there is always something to do or see. Surprisingly there is a lot of cultures here, amazing coffee and bars, good music, and authentic food from all over the world. Living in Melbourne and the surrounding inner suburbs, you can survive without a car, the public transport is pretty good, could be a lot better but still good enough to use on a daily basis. Melbourne is amazing, Sydney is overrated and too busy.