Need help chosing a preamp

Currently burning in my Luxman 10Mx and in need of a preamp. I’ve heard there’s great synergy between the Luxman amp and preamp combo. My question would it be better to match my preamp to the Dac so I my options:

Nagra tube Dac/Nagra HD preamp/Luxman 0mx or

Nagra tube Dac/Luxman preamp/amp combo

plan is to eventually run the Luxman in mono mode

Thanks