Solid View better recognizable? is there a way to change the Material for the Solid View? 
Like in 3ds Max you can change to Clay Mode for Example.
I wouldn't mind with a normal grey object but somehow in Blender the Objects have such a weird lighting that its difficult to recognize edges in my objects. 

I'm not talking about wireframe mode. I dont want to see every edge n my object. But when for example i extrude minimally into the surface then its hard to see without turning the camera until you have an angle on it that lights it with good difference.

Hope you can understand what I mean. 

Thanks
When in solid view in viewport, open up the right toolbox by pressing N. Down there, under shading, activate Matcap and Ambient Occlusion. This improves the view remarkably. If there is another way to improve the viewport, especially with large grayscale models, I'd like to hear.