What do you like best?
This software is perfect for professionals, small and medium organizations. I use it, as a single software developer, and offer my services to install, and adapt, making modifications or new modules that fit customer needs. Each commercial activity has its own processes, and with Dolibarr you can get all them under one system.
What do you dislike?
No much, perhaps interface is not the last, but is improving version to version.
Recommendations to others considering the product
Give it a try, and use some of your time/effort, or some curse, to learn how it works, and how it is built. It is open source software, supported by a community. Community is open to questions.
What business problems are you solving with the product? What benefits have you realized?
I use to manage my freelance work, and I have installed it to several organizations. It is a complete solution for selling products, selling services, and control customer needs. Full manage of money, banks, and a lot of modules developed by third parties, available in Dolistore.