What do you like best?
I like being able to edit and/or fill-in .PDF documents. I also like that I can retrieve documents that I have previously worked on.
What do you dislike?
I'd like to be able to change the font in the text option, as it doesn't always look right if mismatched.
Recommendations to others considering the product:
I'm not sure how I first heard of PDF FILLER, but am I ever glad that I found it. My advice would be to try it out and see if it suits your needs. I like many of its features, especially the left pane that shows the document pages, and the ability to select only those that you want to include in a print or save maneuver.
What problems are you solving with the product? What benefits have you realized?
One use that I have for the program is for one of our telecommuter workers - so that she can enter details on employee time cards, and it looks better than handwriting in notes. Uploading the documents she needs is a breeze, and the program alerts me to activity, for example, when she emails the documents to us for distribution.

What do you like best? PDF Filler helped me when I inherited a bunch of learning material that referenced outdated case studies and I needed to update for class. Because I didn't have Adobe or photoshop, this was a great alternative to help me quickly update the decks. Erase text allowed me to "white out" the outdated information without compromising design quality. What do you dislike? If you are adding text and trying to use text box, it will show a box around what you replace. When using the text feature to replace text, of course, you won't have an exact match unless you know the current document's font and size. Nonetheless, PDF Filler makes it easy to drag, drop and align so that you'd have to really stare at the document to notice the differences between the original text and your replacement text. What problems are you solving with the product? What benefits have you realized? Needing to edit PDF's that were previously created, and provided no access to the original version. Better ease of use//less learning curve than Photoshop. Cost-friendly alternative to Adobe.