Best Monitors used under $800

Hello:would appreciate any info on best monitors used under $800 for simaudio celeste integrated,my preference is for an open,neutral,transparent and extended type of sound,currently i have paradigms studio 20's and would like an upgrade path that would better them in vocals,mids,more refine highs and maybe bass aswell,speaker cables are dh labs q-10,interconnect are synergistic ref and cd player is an EAD ultradisc 2000,thanks to all in advance,regards,AL