Which pre should I choose?


I have an Accuphase A47 to drive my Dynaudio Coutour 1.3SE. I want to choose a pre-amp to match my power amp. and the speaker system. I prefer classical music. My room is not big. But I like warm and sound with thickness. Do you have good suggestion? How about Ayre's K1XE or Audio Research R2 MKII?
faust168
My current preference is a Herron VTSP-3A (r03).  It is rich and full in tone and harmonics.  It is also quite dynamic and time alignment is as good as it gets.  I have heard nothing better. 

Sorry for my innocent. In Taiwan, it seems that this brand (Herron) havn't been introduced here. In now days, many Hi Fi  audio brand are disappearing or switch to do other audio gears such as headphone  which has tremendous demand.  And the Higher end components price have been pushed up to the very expensive level which only few music lovers can afford...... 

It's  not easy to find the balance of good C/P.