Big fan of pdffiller, been using it for years. A great way to make rapidly and professionally submit documents provided by others.

So far all is formatted well for my document needs..

What do you like best?
I like the choice of fonts because one can add changes or complete empty fields to a pdf and by using a different font from the original text it is clear that the additions are different from the original.. Also I like that one can add circles, check marks, "X" to a doc. And can erase portions of text.
What do you dislike?
I dislike that you have to pay extra to add or subtract pages from a pdf.
What problems are you solving with the product? What benefits have you realized?
My hand writing is very poor. So I use PDFiller to compensate for this deficiency..

There were a lot of challenges while using the service. Which were addressed by Adobe acrobat

It will be better if you can copy and paste text intead of only lines.

This program does exactly what I need. I love it!