pouët.net

what about AND's approach in Zoom3? he held a seminar about it

In my opinion currently the best way is the one you use already. Add expanding the mesh slightly in the direction of the motion when the motion is very fast and taking into account last frame projection matrix in the position delta calculation (to get camera movement affect blurring).
Btw. asking questions like this without giving details about what you find wrong with your current implementation or what kind of limitations you have makes giving good answers hard..