What do you like best?
ZoomInfo's contact info is good. Phone numbers and emails are fairly reliable. Easy to import contacts into SalesForce when set up as a plugin. Also easy to search for accounts and contacts from within SalesForce, and import to create new contacts and accounts.
What do you dislike?
The employee counts are trash. Everything falls into a bucket (25, 50, 100, 375, etc.,) but when you look at the actual employees in the company, it can be far off from the stated number. For example, ZoomInfo says "375 employees" and when you actually click into the account to look at the employees, there might be 45.
Recommendations to others considering the product
It's a great tool for finding contact info for prospects. Not sure on the back end, but seems easy to connect to SalesForce, and strong ability to quickly import contacts on a one off basis, or in bulk. The contact information isn't perfect but is very good.
What business problems are you solving with the product? What benefits have you realized?
Ability to find companies, employees, and contact info is very good. Strong benefit for a sales organization.