I had a requirement to be able to read in a PDF document and inject rich text annotations containing priorietary information from my database. I also had the requirement to convert to/from other formats on the fly in my application and perform other manipulations to the document. I tried to use other products and they were either:

• Very complicated to use (the next best option I found out there took me days to build something, using tons of code, and the results were never quite right).
• Had unacceptable performance (performance was critical, the end user could not wait for minutes to get the updated document).
• Would take me way too long to implement the functionality I needed with all the bugs and performance issues ironed out. I needed to get it out the door ASAP.

I decided to give the Aspose PDF component a try, and I was able to implement a rock solid solution in a matter of hours. The library was much easier to use compared to the other options I tried. Performance is great, and it is also much more accurate than the other options I previously tried to cobble together myself. The amount of time it saved me was well worth the price of the license.

I would highly recommend using this component if you need to handle PDF's in your .NET applications.