Sharepoint - What is the best way to determine if CurrentUser is System Account?

To check if the Current User is system account you can use

if (web.CurrentUser.ID == web.Site.SystemAccount.ID) 

SystemAccount is a property of SPSite object which gets the System Account of the site collection

SPContext.Current.Web.CurrentUser.ID == SPContext.Current.Site.SystemAccount.ID

This method is suitable?