I like that it gives us an overview of our sales pipeline, giving insight into where we're at in terms or open deals/opportunities compared with closed opportunities for each account - plus there's also historical data available if you want this as well! It helps me have visibility over my team members' activity levels across accounts which has been invaluable when trying new ways to improve productivity (eg using Pardot).
The UI can be clunky sometimes but once your used to how things work around here then its ok :) Not really any dislikes just minor issues such as needing more training before being able use everything fully etc so take these tips along while getting trained up :D Bulk emailing campaigns are super easy now thanks listwise!! We've managed huge gains by automating all out marketing efforts through mass emails sent via Salesforce CRM integrations rather than having people manually copy & paste lists together ourselves ;).