From a technical perspective, this is an excellent product.
What needs improvement?
Qlik can be made more user-friendly. Support-wise, this solution is in need of improvement.
Which solution did I use previously and why did I switch?
I have used HVR and I feel that it has more features than Qlik. It is also more customer-friendly.
What other advice do I have?
Feature-wise, I cannot think of any improvement that is needed. We are very happy with Qlik, no doubt about it. The only problem is with support. When we ask for technical assistance they should be in a position to support us. I would rate this solution a ten out of ten.