What do you like best?
Qlik Sense is very easy to use for an end user, and is responsive out of the box(works across all screen sizes). Once data is loaded into an app, it is extremely fast in the UI with almost no 'data chug' even with data sets with tens of millions of rows. It is very easy to extend Qlik Sense with custom visualizations or even use the data engine to build your own applications, the API is great. The community is solid and does a good job responding to inquiries in a timely manor
What do you dislike?
The UI can be a bit inflexible, it would be nice to have non-responsive dashboards that allow us to break away from the snap to grid default. Larger sheet canvases would also be great.
The set analysis formula syntax, while powerful, can be difficult to learn for a new user.
I don't think that some of the resource filter options for security rules in the QMC are as well defined as they could be.
Recommendations to others considering the product
Try out Qlik Sense Desktop version, it's free and has almost every feature other than the enterprise administration features.
What business problems are you solving with the product? What benefits have you realized?
Time to value accelerated greatly. We're able to consolidate thousands of reports into meaningful dashboard representations. This allows us to see the entire company from 5000 ft up and drill down to ground level as the situation requires it.