Best backpack for university?

Hi,
    I'd appreciate it if you could name some good affordable brands with a selection of backpacks?



I need to be able to fit in my laptop, iPad, and books of course. And a water bottle.



Links would be awesome. But I'm living in Melbourne so if any of you folks from around here could tell me some good stores to go to?

 Please help.

Thanks!

I didn't find the right solution from the Internet.

References:
www.theverge.com/2014/2/11/5400510/best-backpack-for-university

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