I recently sold an ARC LS12 that I thought was an amazing preamp for the money, not because I didn't like it but because I had to sell a whole system to make room for our new daughter. Definitely try to listen to one; they didn't get much press but are definitely a product to be reckoned with in this price range. Based on what you are looking for, I would say you would probably be ecstatic with this unit.
www.audioresearch.com/LS12.htm
www.audioresearch.com/LS12.htm