amp for vandersteens

Luxman, Ayre, Arcam. :)

I had a Rogue Cronus Magnum with my 2ce sig II thought it was always a great match very musical  really enjoy them together and won't break the bank 
used Audioquest Rockefeller biwired speaker cables with them

A Belles Aria integrated should be a contender, especially if on a budget.
Otherwise, an Ayre AX-7. Actually, both are great integrated amps that will complement Vandersteen speakers.
Though you didn't ask, I would pair the above with AQ speaker cables.
Definitely, a match made in stereo heaven.
Bob