HealthVault SDK and Visual Studio 2005

The HealthVault SDK is currently built on top of the .NET 2.0/Visual Studio 2005 toolset. We are thinking about moving forward a few years and switching to the .Net 3.5/Visual Studio 2008 toolset, but would like some feedback from customers on what they are using first.

If you are building HealthVault applications, can you reply with the version of VS that you are using? Thanks.