Quality Monitors?

Hi There:i'm looking to upgrade my speakers(paradigm ref v 40's-2),will appreciate opinions on monitors that will offer better performance retaining a strong bottom end performance while bettering the paradigms in every other category,price range will be at $1,500 used,here is my system:
classe transport.
resolution audio chronos jitter attenuator which also splits the digital signal into two resaudio quantum dacs in balance mode(digital heaven).
simaudio moon I-5 integrated.
cables are mapleshade omega mikro dig.,and synergistic ic's
dh-labs q-10 biwire speaker cable,thanks in advance,AL