I heard both at different dealers with different (but similar class/league) gear and cables. My nod goes to the VR-4 JR. But as mentioned you should use a good amp on the JRs and also lead shot them and break them in at least 400 hours to hear the potential. Used/demo pair of JRs (Mark I) can be found on Audiogon quite cheap these days. Not sure how good the Mark II sounds over the Mark I. If you like surprisingly realistic musicality at a modest price around 2k, you can't go wrong with the VS JRs. You will have to look very hard to find something that can compete in that price range.
Good luck !
Good luck !