Accuracy and window to source=Vandersteen
Beauty with a bit of technicolor shading=Sonus Faber
I assume you are comparing Vandy 7s with Strads but my summary would apply across the board with Vandys and Sonus at similar price points. Vandy 7s have the extra benefit of a spectacular low end with a powered amp built in. Strads and most other stand alone speakers can't touch the Vandy low end slam.