Amplifier suggestions

I have a pair of Dynaudio 3.3's and I am going to 5.1 with them. I have an Aragon 4004 mk1 which to me mates very well with the Dyna's. I really like the amps liquid midrange and highs. It's bass control is ok. I thinking about buying a 5 channel amp (or possibly 3 channel) to replace the Aragon. I am looking to take a step up but don't want to pay more than 3k used.
Thanks