Aries Cerat Helena or Mola Mola Tambaqui?


I am deciding which dac I should take. Mola Mola(8000 euro) I can audition, Aries Cerat Helena (11000 euros) I can not, only direct sale. Mola has volume regulator, Helena not, but it is R2R with tubes like Lampizator, weighs 40kg oppose to 6kg of Mola. Mola is more commercially known and very very good reputation. Both have also reputation as a killer of very expensive dacs.  My system is Tannoy westminssters Roayal and tube monoblocks ith Se-833(similar to Wavac Se-833))Any thoughts or experiences with these dacs? 
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Dave USB output has 348khz/31 bits, and thats what they recommend to use with streamers. I dont know, is it enough to play highrez?  I am not technicaly educated at all, what matters is how it sounds, and people who have more experiences saying that tube RR dacs are playing more naturaly and are closer to realism. So that is what makes me wondering how this Helene will play. The sellers are creating poems how great this machine is compare to other stuff, but I know that is not enough, need to listen it myself and decide. Mola is really something unique and it is very certain that it will satisfy me for at least year or two, hahahaha. Hey guys Happy New year, have your dreams come tthrough
I've compared both in the same all Aries-Cerat system (I owned the Tambaqui previously).  They are both fantastic- the AC Helene is more open on top with wonderful organic tonality.  The Tambaqui counters with incredible purity; S/N ratio off the charts, and detail without stridency- both have wonderful staging, but the Helen puts you in the studio even more.  I wouldn't hesitate to own the Tambaqui again, but that being said, Aries-Cerat is the next level, but we are talking completely different price points here...  The end-game goal is the AC Kassandra II- 'one ring to rule them all'...