We purchased Syncfusion full suite of products 4 years ago as part of a commercial product we offer nationwide. We have been with them every year since. We can verifiably say their products are clearly written for the developer and they are continuously looking for opportunities to improve on them. We primarily use the grid and reporting components, and for us they provide the flexibility, speed, and effectiveness to handle the most demanding of user interface requirements. Their calc engine is exceptional and very flexible. We can't say they are perfect, but if you are developer who needs a race horse to perform without a lot of overhead, we would strongly recommend you consider Syncfusion controls, they are among the very best and were the perfect choice for us.