Next step Phono


I'm using a Vincent Phono 8 with my Rega Planar 6 with the Ania MC cartridge.  I have a Bryston 4BSST amp and  Bryston BP 26 preamp, Revel F50 speakers.  Where brand and models should I consider?  I want to keep the price under a grand don't mind used.  
djb32