I like that it is easy to use, fast, reliable, and has many useful features including an API for integration with other products. It's also free! There are no downsides at all so far. This software helped us achieve our goals of clean data without breaking the bank or hiring expensive consultants. We were able to identify duplicate records, remove out-of-date information (such as phone numbers), correct spelling errors in addresses, and more, all while having peace of mind knowing we didn't have any bad data floating around in our system.