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
Guys thanks for being patient with me. I received the Vitus about 3 weeks ago but haven't bee able to listen to it enough until this week. There are already quite a bit of published reviews and forum threads that discussed the sound quality and characteristics of the RI-100. My impression is consistent with what the professional reviewers and forum threads said. First of all, this amp produces very well-balanced frequencies over all spectrum. Tube-like silk smooth high when I listened to the violins. Natural and life-like female Jazz vocals. The bass is deep and tight and that makes RI-100 stands out among its competitors. The amp paints a wide and deep sound stage and the instrument separation is excellent. Most importantly, it doesn't cause fatigue after long listening sessions. Like I said, this is the first week which I have a chance to spend enough time listening to the amp. Will do more listening in the next few weeks and keep you posted. In general, I'm very happy with this amp. 
@jjue That's great to hear sounds like you made a great choice! Enjoy yourself and happy listening!

Thanks for the update jjue.

Keep them coming.

Just curious - what power cord are you using?

I'm using TWL 8+. Will have a chance to try Masterbuilt this weekend. That may give the Vitus a big boost I guess.