Tubesound247,
I just went on a preamp listening tour, and listened to quite a few preamps in person: Rogue Audio RP9, BAT VK-80, Backert Labs Rhumba 1.4, Backert Labs Rhumba Extreme 1.4, used ARC REF 5SE. Of those my favorites were the BAT VK-80 and Backert Labs Rhumba Extreme. I could have lived with the Rogue RP9, had I not heard the BAT and Backert.
In the end I ended up buying an Aric Audio Motherlode XL preamp, the idea of a point to point wired and easily upgradable preamp (along with only amazing reviews), and having heard another of Aric's preamps.....was the deciding factor.