iPad Air and rMini request

Hello!
As it turns out a colleague is returning from the US in a couple of weeks and I'm tempted to get an iPad since it's priced vastly cheaper in the US compared to my country (499$ vs 680$ for an Air).
I have a lot of PDF books such as;

https://www.dropbox.com/s/2regvjbd5uo2tfd/Applying%20UML%20and%20Patterns%20An%20Introduction%20to%20Object-Oriented%20Analysis%20and%20Design%20and%20Iterative%20Development%2C%20Third%20Edition.pdf

If anyone has the time, would you mind downloading the above PDF and report back how it looks on your display? Are you able to read it without having to zoom too much? Does the text look crisp enough to be readable for a couple of hours?