Purchased this bag when it was first listed back in '08. I was in year 8 at that time, the first time I saw it I knew this monster will be stuck with me for a long time and 5 years, that has been proven true!
Throughout the 5 years this bag has gone through some rough usage by me, but the only reason I kept treating it roughly was because it looked new even after I DRAGGED it on the road (I was bored) but then I threw it on a muddy field because the thought of the bag ripping never, ever went through my mind. The 30 year warranty is there for a reason because Eastpak knows that not many people will be using that warranty, aha!
It's waterproof (has been used in some serious, trust me serious downpour), it doesn't rip or tear, the zips never get stuck and have been smooth since the first day of purchase.
However, there are some negative points that I was not expecting and you should look into before buying. Firstly the bag when it arrives (and even 5 years) is very stiff or hard, I have put it through it's uses but it still hasn't gotten soft. This could be a good point because it always stays brand new. The second thing is that I am left handed, I used to put this bag on one shoulder and the rubber grip underneath the padded strap has slightly come off but considering my usage of the left strap this cannot be described as a major flaw.
Other than these two slightly negative points nothing else, believe me nothing else has bugged me over the 5 years. I am thinking of taking this bag to uni, so it has been with me to school, college and hopefully uni. Its an absolute monster. Definitely consider buying this if you don't like wasting money on bags. Buy it, please!!