best preamps

Drop an email to David Berning to see if he will build you a Pre One.
http://davidberning.com/products/preone

"And Yes I have unlimited money :)"

Hook up with caphill and go from there... 

Everything depends upon your ROOM.  All the pre-amps mentioned here are wonderful in some ways and not so much in others--see the qualifying comments supplied with the recommendations. 

Your ROOM is the main determiner of how your total system sounds to you.  

Have your dealer loan you several with your existing system, should you be happy with it, and you will figure out what is the "best" pre-amp FOR YOU in YOUR ROOM with whatever you have in the rest of the system and with the music you like to listen to.

Kind of like asking, "which tires are the best for my car?" 
Answer: It depends.

The world today is a bit more complicated than it used to be. A person has to be willing to read and study and then experiment to find the "best" of anything.  Naturally, tires are a bit easier to pick than pre-amps, which don't cause you to crash your car. Tires either perform under given conditions on a given car or they don't. Pre-amps, on the other hand, can be measured for performance, but "sound" is subjective. 

Cheers!

Some of the preamps that have been mentioned have output impedances that are too high at some frequencies to be optimal (or even suitable) for use with some power amps. Some of the preamps that have been mentioned have input impedances that are too low to be optimal (or even suitable) for use with some source components. Some of the preamps that have been mentioned have too much gain to be optimal (or even suitable) for use with some combinations of source components, power amps that have high gain, and speakers that have high efficiency.  Some even have too little gain to be suitable for use in some systems.

An indication of what associated components the preamp would be used with would result in answers that are more focused.

Good luck. Regards,
-- Al

So let's see about 24 responses to the OP and around 27 suggestions......that seems right!