I have used this website extensively for checking my results(right from my secondary cbse results) and believe me it is one stop shop to check result from all over India. It does not matter you belong to which state or the exam given is from Central or state govt, you will get the result on time.
I have even noticed that servers from the official govt. site gets slow while result is out but no such experience with this site. I have even downloaded papers for previous exam and sample papers for upcoming exam. The whole website is categorized well and finding a result on this website is really very easy. They even provide tips for the upcoming exams which is missing in other leading sites.