What do you like best?
PDFiller is ultra-convenient and super-easy to use. It's in the cloud, so it's easy to access. And it has a vast array of features. Storage is a cinch, whether on your hard drive or in the cloud.
What do you dislike?
I can't think of much that I don't like about the program. There might be a more direct or seamless way to save documents to Google Drive, in terms of getting them straight into a particular folder instead of just onto the Drive, but that's a minor issue.
Recommendations to others considering the product:
Try it. You'll like it.
What problems are you solving with the product? What benefits have you realized?
PDFiller is a lifesaver when I'm editing contracts and related forms. The clarity of the input and the ability to maneuver the text around the document is a huge plus. Line-outs and erasures are a breeze, making for "cleaner," more legible documents.

What do you like best? Basically, it just works. There is no learning curve, no difficulties, no glitches. It is simple, does what it is supposed to do and more. I can merge sheets, sign docs, fill out forms ... everything that could otherwise be a hassle while working remotely. What do you dislike? It may just be my set up, but when I have completed the document on pdf Filler and click "save as," it downloads to my desktop as opposed to allowing me to set the folder of my choice on my hard drive. Not that big of a deal to open the download and 'save as' from there, but just a small annoyance. What problems are you solving with the product? What benefits have you realized? I often receive documents piecemeal - one page at a time - or I get them back from different signors in different configurations. I love that I can upload them all at once, merge them right off the bat and have the combined document. I can easily rearrange the pages if needed too. Also, during this Pandemic, it has proved invaluable in getting documents easily executed when you cannot meet with signors in person.