bookshelf speaker choice

I am planning to upgrade my speakers, I thought I would ask for a few opinions.
Currently I use a B&K amp and I am considering either new NHT classic 3's, used paradigm studio 40's, or used Von Schweikert VR-1's. All 3 should be the similar in price range, which would you choose. I want something off the floor since it's a small house and couple of small children which creates a need for speakers that are not floor standing. These are meant for stereo listening and mains for my HT. Thanks for the input.