I have just replaced my BAT-51SE with Placette RVC. The Placette sound MUCH more open and transparent, with VASTLY superior microdynamics. Make sure that it works in your system though, since any impedance mismatch will make it sound too thin (as some reported here).
If all goes well - it will be hard to find a better pre at ANY price.
If all goes well - it will be hard to find a better pre at ANY price.