The best C# PDF SDK to Modify Alternative Choice PDF

Absolutely By Far the Greatest thing since the Wheel you guys rock i mean your program is the most simplest and helpful thing i have ever come across i mean literally your program by far goes beyond to help even the most non computer literate person like myself thank you so much!

What do you like best?
The best features are (1) the ability to easily import and that it converts with accuracy and (2) the ability to manipulate doc - more specifically merge, edit, copy, etc.
What do you dislike?
The only feature that does not seem intuitive at times is the folder structure and how the files are organized. When editing a doc it will always move a doc to the top because it is the most recently viewed or edited doc - but this sometimes makes it confusing. Similar to Outlook, it would be nice to have easier drag and drop feature for organizing the docs.
Recommendations to others considering the product:
This is a quick out of the box product, overall very intuitive and easy to use.
What problems are you solving with the product? What benefits have you realized?
Able to import and edit docs as well as having them signed online.

Cut the paper trail and faxing Instead of faxing documents, I just get them emailed. The documents are more clear, it's fast, and I can sign and fill in easy without needing to fax it back. I love the signature button. This is so easy to use. Uploading and downloading is all I do now. My fax machine is obsolete. You have to download it to your computer from email, then upload it to pdf filler - at least that's how I do it.