Which edition of Windows 7 is most suitable for software developers? [duplicate]

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Which version of Windows 7 sho开发者_如何学JAVAuld I install on my development PC?

Just wanted get some opinions on which edition is best for developers.

I'll be using Visual Studio 2010, IIS and various non-Microsoft development tools.

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For localization purposes, Ultimate is useful. As I understand it, you're able to switch OS languages which is great for testing as though you were a user with a different language version of Windows 7. Changing localization settings in the control panel sometimes isn't enough!

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I am using an OEM copy of Microsoft Windows 7 Home Premium 64-bit - it cost me about $100 online. I do Silverlight and WCF development in C# with Visual Studio 2008. You have to install IIS 7 and configure .NET, but I have not run into any issues so far. If cost is a factor, this might be a good choice.

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If connecting to a domain is a requirement then professional is required at a minimum.