Overall the Cognism team has been exceptional in their support and willingness to help us success with their product. It's been a great experience and we have tried many competitors.
I like the ease and speed of use - you can create custom filters and drill lists down deeper and deeper really quickly which saves tons of time data cleaning and exporting lists.
Overall Cognism is a great product but overall cold outreach and prospecting is a tough errand, so success is hard to come by. It's a lot of grunt work for non predictable returns.