Help choosing integrated


I'm currently shopping for an integrated amp for my main system. Got a few integrated amps on my mind. Since I haven't had a chance to audition all of them so I would like to learn from your experience and get your input before making the final decision. Here is my short list (all used):

Gryphon Diablo
Vitus RI-100
GamuT Di150
MBL 7008a

The rest of my system includes:
MacBook Pro/Audirvana
Anticables 3.1 USB cable
Hegel HD 25 DAC
Focal Diva Utopia Be
Synergistic Research Tungsten Interconnects
Triode Wire Lab Speaker Cables 

Thanks in advance for your feedback!
jjue
The Modwright KWI-200 is also worth putting on your list. The Modwright IA has plenty of power to drive your Focal's (very fine speakers) to audio bliss. This IA has a tilt to the warm side and in the used market is well below the price points of the high quality IA already under consideration. Happy hunting.
REGA OSIRIS stablemate suggestion as requested: 

REGA ISIS cdp/ DAC ( valve version preferred IMO both both are superb, full stop ) )

http://www.hifiplus.com/articles/rega-isis-cd-player-osiris-integrated-amplifier-tas-213/

Goliath killer ... highly recommended