Best Pre/Pro for under a $1000 used?

I currently have a Aragon Soundstream Pre/Pro and I was wondering if anyone thought there is a nice upgrade out there used for under 1K? I have been looking at numerous options but I have no experience with them. Some are the Anthem AVM-20 V2, Meridian 565, Proceed AVP-S, plus other models from Lexicon, Krell, B&K etc. I use it about 70% music, 30% movies. Any advice/opinions would be much appreciated. Thank you

doug