I just picked up a Bryston 3B ST and I am not looking for a matching Pre. I think I want a tube amp, CJ or AR, and in the $450-$650 price range. I play mostly CD's with female vocals and jazz. I have a pair of Snell right now, but I am waiting for some Vienna Acoustics Bach's or Motzart's to come along in my price range.
At your price range I would say a Quicksilver audio pre with a set of NOS tubes and you will be in good shape. Google search Joes tube lore and read up. FYI I found Harmonic Technology Truthlink cable a good match with the 3BST.
For that amount of dough I'd go for a Mapletree Audio 2A SE. Female vocals and jazz (my favorites as well) sound terrific with this pre: extended, full-bodied, deep; although I've only heard it in my system, which is not Bryston.