Need your expertise over 2 dac choice....

Hi everyone...

First my Enkianthus X is at repair now, and the technician is not sure about finding part to repair it....

So for the last month I have been looking for it next replacement... What I want is a dac that sound as good as the Enkianthus X or better at $7000 max....

My choice came down to 2 model...

After searching all over the web I came down to 2 model that intrigued me. The Meitner Ma-1 and the AMR dp-777.

I know that the Meitner has DSD, and I am not sure if I will ever need it...
The AMR is tubed and from what I have read, maybe a little more organic....

On both of them I wont be able to demoed it at home not even in local store, (no reseller in my area) and I will have to make an act of faith, order/buy one, before even seeing the shipping box...

First question...
To those of you already owning the AMR_dp-777: did you ever got your dac sent back for repair do to low built reliability, like I have read somewhere over the net ??? And the post says, sometime 2 repair ???? Something I don't need for sure...

Second question...
Which one would you buy: Meitner for it's well base reputation problem free over the year and easy to sell back.
Or taking a chance (in my case) with AMR, new to me (not to many sold in Canada) no DSD, tubed sounding, maybe a bit more organic and good reviews all over the net ????

From what I have read, both machine are very very good, and make my choice even harder, both of them at the door will cost (taxes, custom fees, shipping) almost the same.

That's why I need your expertise before making my final decision, specially from those of you who had the chance to listen to both machine side by side...

Thank again for your time
Danthemannn