ComponentOne products are among the few components I can actually rely on in a production environment. I can trust them like I trust my own code. I use a number of ComponentOne components (ActiveX, WinForms and WebForms) and all are very stable & mature. The few bugs I've encountered over the years have been fixed promptly. While other companies are happy to sit on their existing code and react to market changes as they occur, ComponentOne has consistently remained ahead of the curve by improving their products and offering new ones early enough for developers to release them "on time". They are an early-adopter's dream and I wish every company was as forward-thinking. On a scale of 1 to 5, I give ComponentOne a 5.