It's a decent university but you need to consider where you want to go with it, and of course, your university only matters so much- a lot of it does come down to you as an individual when it comes to grad jobs.
The B Comm at Macquarie has a lot of options for majors, resources and support for students is great and the best bit is doing an internship with academic credit which really helps with finding a job after uni. There are lots of active student societies on campus as well so you'll have lots of fun there.
Edit: you may also want to post in the Macquarie University thread...