My vote would be for neither. Take a look at the Vacuum Tube Logic page for some tremendously musical amps that mate very well with Martin Logans. In fact, all the speakers shown in the photos are Logan designs. Don't forget that most "best of show" awards that Martin Logan speakers win are when paired with VTL gear versus the Krell. http://www.vtl.com I may be biased however, I DO own a VTL Ultimate preamp and love it :)
