What do you like best?
Such fillable forms usually cost $700 for a year's service. This is less than $150 per year. Easy to use and effective.
What do you dislike?
Some of the protocols are cumbersome. For instance, when you want a standard form, it makes you go through a process instead of taking you right to the form.
What problems are you solving with the product? What benefits have you realized?
Attorney running small practice in which I need fillable California Judicial Council forms

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 PDF Filler helped me when I inherited a bunch of learning material that referenced outdated case studies and I needed to update for class.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 Erase text allowed me to "white out" the outdated information without compromising design quality.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.