What do you like best?
Practical law is easy to navigate and easy to use. It is organized my practice area, resource type, and jurisdiction. This makes it easy to find what I need (whether it is a guide, or a document).
What do you dislike?
There aren't any major cons, but there are some resources that are better from other providers (such as Lexis Nexis). This just depends on preference.
Recommendations to others considering the product
I suggest checking with other users to ask what they use it for, and to see if Practical Law has the best resources for what you are looking for (again, other providers may have better resources for certain practice areas).
What business problems are you solving with the product? What benefits have you realized?
Practical law provides practical guidance and resources that help with daily practice (as opposed to theory and academic oriented resources).