R2R Dac choices.

As to this point in my young audiophile career my dac has been an Oppo 203 running analog into an Anthem Mrx 720. I'm to thrilled the way it sounds for music! 4k movies is a different story.

The anthem is on the way out as I move to a two channel system. I have Ps audio M700 monoblocks and Ascend Acoustics towers with ribbons. I was about to purchase the Metrum Adagio and Ambre. As I don't or won't have a preamp the Adagio seems like a great choice because of the volume control. A preamp is definitely a possibility. And then I read about the Mhdt Labs Orchid dac and I started to waver lol. So I'm looking for a little help or guidance in these choices and other suggestions as well. 
Look forward to hearing what you cats have to say!!