>I have started using GIT ( GitExetensions actually ) and I understand now why some people like it so much for version control

careful! you might be called heretic...

>>And since the EDMX is basically XML I think it versions well with GIT ( though just started using it so haven't really put it to the test yet.)
>I think MS trying to decouple the EF from specific backend implementation limits what they can do with Migrations though that's just a guess and migrations seem to be pretty much in beta.

For me most ??ML used as a transformed relational tool is an abomination.
Used as a standardized OOP notation
WHEN EXTRACTION OF COMMON COMPONENTS IS DONE REGULARLY/AUTOMATICALLY
it is even for me the better tool.
But that is not the norm, consider EDMX:

Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
Project("{E24C65DC-7377-472B-9ABA-BC803B73C61A}") = "localhost", "http://localhost:36626", "{9BA46BAD-E736-4943-ACAD-EDE2E7A1A21E}"
    ProjectSection(WebsiteProperties) = preProject
        UseIISExpress = "true"
        TargetFrameworkMoniker = ".NETFramework,Version%3Dv4.0"
        Debug.AspNetCompiler.VirtualPath = "/localhost_36626"
        Debug.AspNetCompiler.PhysicalPath = "..\..\My Web Sites\Jantire\"
        Debug.AspNetCompiler.TargetPath = "PrecompiledWeb\localhost_36626\"
        Debug.AspNetCompiler.Updateable = "true"
        Debug.AspNetCompiler.ForceOverwrite = "true"
        Debug.AspNetCompiler.FixedNames = "false"
        Debug.AspNetCompiler.Debug = "True"
        Release.AspNetCompiler.VirtualPath = "/localhost_36626"
        Release.AspNetCompiler.PhysicalPath = "..\..\My Web Sites\Jantire\"
        Release.AspNetCompiler.TargetPath = "PrecompiledWeb\localhost_36626\"
        Release.AspNetCompiler.Updateable = "true"
        Release.AspNetCompiler.ForceOverwrite = "true"
        Release.AspNetCompiler.FixedNames = "false"
        Release.AspNetCompiler.Debug = "False"
        SlnRelativePath = "..\..\My Web Sites\Jantire\"
    EndProjectSection
EndProject

vs. manual attempt

Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
Project("{E24C65DC-7377-472B-9ABA-BC803B73C61A}") = "localhost", "http://localhost:36626", "{9BA46BAD-E736-4943-ACAD-EDE2E7A1A21E}"
   AspNetCompilerDefault
            VirtualPath = "/localhost_36626"
            PhysicalPath = "..\..\My Web Sites\Jantire\"
            TargetPath = "PrecompiledWeb\localhost_36626\"
            Updateable = "true"
            ForceOverwrite = "true"
            FixedNames = "false"
            Debug = "False"
    EndAspNetCompilerDefault
    ProjectSection(WebsiteProperties) = preProject
        UseIISExpress = "true"
        TargetFrameworkMoniker = ".NETFramework,Version%3Dv4.0"
        Debug.AspNetCompiler = AspNetCompilerDefault
        Debug.AspNetCompiler.Debug = "True"
        Release.AspNetCompiler = AspNetCompilerDefault
        SlnRelativePath = "..\..\My Web Sites\Jantire\"
    EndProjectSection
EndProject

>Stuff like llblgen.com looks interesting. I think there are going to be a lot of 3rd party tools to handle lots of scenarios.

Interesting - might grow into something. For me missing is SQLite as client cache option and
specs as to whether Mono could handle at least the generated code - although I did not look in depth.

thx

thomas