MSDN这几个版本我应该选哪个下载？

Windows Server 2008 R2 Standard, Enterprise, Datacenter, and Web (x64) – DVD (Chinese-Simplified) 详细信息 Windows Server 2008 R2 Standard, Enterprise, Datacenter, and Web with Service Pack 1 (x64) – DVD (Chinese-Simplified) 详细信息 Windows Server 2008 R2 Standard, Enterprise, Datacenter, and Web with Service Pack 1, VL Build (x64) – DVD (Chinese-Simplified) 详细信息 Windows Server 2008 R2 Standard, Enterprise, Datacenter, and Web, VL Build (x64) – DVD (Chinese-Simplified) 详细信息