What do you like best?
It's easy to use, both for administrators and end-users. We were using a (much) older version of NetX that our employees found confusing, but I've only heard good things about how easy it is to use the filters and save custom searches. There are ways for people from outside of your organization to view and submit assets, as well.
The online guide is comprehensive and I've always heard back from the service rep quickly if I have any additional questions. He's always taken the time to train me or do a walk-through if it's a complicated situation.
What do you dislike?
These may only apply to the on-prem version but I have to go through IT to make some changes that I hoped would be easier to do, such as remove some of the standard filters and re-order them in a way that would make more sense for our organization. It's possible, but not with basic admin rights.
We've also had a long-standing issue with people sometimes not being able to login immediately. IT and NetX are working on it, but it's frustrating. People also need to use Google Chrome to log in, as they are unable to with Microsoft Edge / Explorer.
The last thing is with permissions. For the most part, they are great. It's easy to change individual permissions or add a person to a group for generalized permissions. When you order the permissions, you need to put them in a specific order with the strictest permissions on top or the more permissive permission would override it. The help guide does mention a hierarchy but it's unclear that it means it in a literal way.
What problems are you solving with the product? What benefits have you realized?
My organization has a lot of images and presentations that are used by a number of departments. NetX makes it much easier for them to find what they are looking for, both with searches and previews. It also makes it easier for them to verify if something is restricted for internal use or can be shared externally.