what is the best rolling bookbag

OH MY!! I went to orientation Tuesday, and we got all of our books!! Sooooo many lol! We start class this Monday and I'm looking for a large rolling backpack/book bag. I have what I thought was a large backpack, but after TRYING to stuff all my books in it, I realized it was way too heavy and way too small. I ended up carrying about 6 books in my arms, plus what seemed like 50 lbs. on my back. If I have to do this all year, I'm gonna end up with amazon woman arms. Anyone have any suggestions??