Von Schweikert VR-4jr owners, your thoughts?

I'm driving them w/a BAT VK 300se. They are super. Well worth the $4K asking price, and probably competitive with anything for 2X the funds. A major strength is their ability to play virtually anything well, from Diana Krall to the Who. They are extremely fast and dynamic. They are capable of extremely believable bass. I've heard them with Sophia's 845 SET tube amplifiers, and they sound extremely good with those as well. If you can find them, buy them.

I am using Analysis Plus Solo Crystal Oval ICs and Speaker Wire. It's a pleasant, neutral cable.
Your amp choices are really unlimited with these speakers.
It will really come down to your personal sonic preferemces.