6SN7 Tube pre amp with great sound staging capabil

I am looking for a recommendation for a 6SN7 pre amp with great sound staging capabilities. Specifically, I would like a pre amp that provides well-defined, palpable images with a forward presentation and micro dynamics while keeping the tube harmonics and bloom. My goal is to keep the cost under $2,000 (used) however I am willing to spend more for the perfect fit.

My system includes Maggie 12s, AES six pacs and Quick Silver preamp.