Pre, pro $3k

Hey, I know this topic is covered in other threads but looking for advice on a pre/pro to feed a Parasound A21 and A31, plus low grade amp for the rears to make a 7.1 system.

I currently have a Marantz SR 5007 that I’m using as preamp and to power my rear speakers.

I don’t expect to go beyond 7.1. So what would you get for ~$3k. Used McIntosh MX122, Marantz 7706, Anthem AVM 70? Something else used or new?

Maybe a new pre/pro wouldn’t make a difference, but thinking something new might have a better DAC, power supply, and support newer formats.

My current processor is ~15 years old and I’m sure I can do better.