Reimyo vs Audio Note 3.1X vs Lampizator DAC ?

This is my second thread on this topic. I am trying to upgrade from a Reimyo DAP777. My budget is $2500 used. Unfortunately I do not have the option to listen to any of the DACs I am listing here. I just want to get a hold on the pulse of what people think and accordingly will try to take a decision.

Reimyo is a nice DAC. It is not as airy and natural as some of the well implemented tube DACs. Audio note 3.1X comes to my mind first. But I have never heard them. I have just heard of them and couple of times I have got this feedback that AN is not detailed as Reimyo. Would like to gather some feedback here from experienced Audiogoners.

Then comes the latest sensation, the Lampizator DAC which is being raved about in the community. I would like to give some credibility to this guy because he has done a lot of work in this area over the last 5 years. But again, no reviews or direct feedback available. Would want to listen from you guys about it if any of you have heard the Lampizator design.

Apart from these I have on offer the following DACs:
1. Exemplar Extant DAC
2. 3-Dimension DAC 18SE

But again not much info available about these in the internet. Guys please help me here. I dont want to give up the Reimyo without some due research. Fortunately or unfortunately I like the Reimyo. It is just that last degree of naturalness that I am looking for.