I were participated in many website projects built on the ASP.Net MVC 2, 4 with back-end using MongoDb or Microsoft SqlServer 2008, such as: - [login to view URL] - [login to view URL] - [login to view URL] I have a lot of experience in building high performance web systems. On my point of view, i think that it is very important to deliver to clients a system with all characteristics they want and surely on time, on budget.