Hi Gasherbaum. Let us all know how you make out. That way, we can enjoy vicariously without having to spend our own money.
P.S. despite the fact that specifications may not indicate that the ARC 250se or VTL S400IIs are a perfect match, both of their power supplies are extremely robust so I think you will be surprised at how well they handle your speakers, especially if used in combo with their respective preamps. Lastly, you are in luck to have a dealer that carries D'Agostino, ARC and VTL. While you are testing those 3 brands, try an ARC pre with a Dag amp. That will get you half way between the full tube sound and a hint of tube sound with what some would say is the best of both worlds. The combo is one I heard often (before Dag came out with its preamp) and I can tell you that the ARC/DAG combo is quite synergistic.
I am a huge fan of your speakers and wish you the best of luck.
P.S. despite the fact that specifications may not indicate that the ARC 250se or VTL S400IIs are a perfect match, both of their power supplies are extremely robust so I think you will be surprised at how well they handle your speakers, especially if used in combo with their respective preamps. Lastly, you are in luck to have a dealer that carries D'Agostino, ARC and VTL. While you are testing those 3 brands, try an ARC pre with a Dag amp. That will get you half way between the full tube sound and a hint of tube sound with what some would say is the best of both worlds. The combo is one I heard often (before Dag came out with its preamp) and I can tell you that the ARC/DAG combo is quite synergistic.
I am a huge fan of your speakers and wish you the best of luck.