Preamp suggestions

I am looking for a great 2 channel pre with HT bypass for dedicated stereo listening.

My current system:
Bryston 4BSST
Bryston 9BSST (5 channel)
B&W 804S
Rotel RSP-1068 surround processor

I'm looking for recommendations on a dedicated 2 channel pre with great soundstaging and imaging.

I'm open to tubes, solid whatever for $3-5K, new or used. I recently hears a Plinius 9100 in my system and the soundstage and imaging were a huge improvement over the Rotel.

Thanks,