Entity Framework 6 - Knowledge Base (KB)

In Entity Framework, what is the best approach to see whether an object exists?

What is the best way to check if an object exists in the database from a performance point of view? I'm using Entity Framework 1.0 (ASP.NET 3.5 SP1).

Linq To Entities - Any VS First VS Exists

I am using Entity Framework and I need to check if a product with name = "xyz" exists ... ...I think I can use Any(), Exists() or First()....Which one is the best option for this kind of situation? Which one has the best performance?...Thank You,...Miguel...