Best PDF library

I will be generating PDFs. Which library is the most good?

I have examined so far:

http://www.lowagie.com/iText/
http://libharu.sourceforge.net/

What do you think?

>>1
Don't, PDFs suck. Why would you want to generate that piece of shit? Everybody hates it. Proprietary format, ugly size, terrible viewers, shitty DRM, user-unfriendly, page-based, ...