Much better than reinventing the wheel
- Kendo UI is particularly great for quickly implementing user interfaces that do not deviate too much from the norm.
- Kendo UI comes with great support. If I can't find something in the manual, I usually get a reply from tech support within 24 hours on how solve the problem.
- Kendo UI is quite mature, stable, and I haven't noticed any breaking changes so far.
Cons
- Kendo UI is quite opinionated. If your needs are very specific, it might not be the best choice because it slows development down a lot.
- Custom styling options are [not] quite ideal yet. Styling can be cumbersome in some instances and almost impossible in others.
- Some components lack the last bit of visual polish.