DAC upgrade suggestion


I am currently using a Audio-gd nfb 3.1.  The information below.  I bought a Topping DX7 pro based on the good data in audio science review.com.  When I first use it, I can hear the difference immediately.  It is more dynamic, bass is more punchy, sound clearer.  It sounds great.  But after listening for a longer time, I feel a bit fatigued.  I can compensate it a bit by switching the tubes in my amp.  Then, I need to return the DX7 because the Bluetooth doesn’t work.  I plug back in the Audio-gd, and i can confirm it is not fatiguing.  It is less dynamic, but also smooth.  Now, I am confused on what I should upgrade.  Several Audio-gd DACs are reviewed by AudioScienceReview.com and the data is very bad, LoL.  I know the bad data doesn’t mean it sound bad, but should I avoid DACs with good data?  How should I pick my next DAC?  It seems R2R DACs maybe a good choice for me since many people says the sound is more analog-like.

http://www.audio-gd.com/Pro/dac/NFB-2/NFB2EN.htm
gte357s
R2R dacs don’t measure as well but DO sound better !!  At least the ones I heard..  Try the Schiit Modi Multibit or the bifrost..  I have the Yggdrasil and the modi multibit dac.. both are excellent sounding and make digital sound like analog music !! 
It is more dynamic, bass is more punchy, sound clearer.  
It seems this isn't what you're looking for. R2R DACs or maybe the RME ADI-2 which has some EQ capabilities would be more to your liking. 
I bought a Topping DX7 pro based on the good data in audio science review.com. 

Those guys base every recommendation on measurements and not listening.
Actually, I like more dynamics, punchy bass and clear, transparent sound.  But the tricky part is, to a point that not to sound fatiguing.  It is more a feeling after a longer time of listening.  When I first hear the Topping dx7 pro, it sounds great.  But after maybe 30 mins, I feel it is too “noisy”, and I need to turn down the volume from my normal listening volume.  I guess this is called the synergy between the components.  I am using a Triode Lab 2A3 and Spatial Lab X5.  Both of them are very revealing.  It seems they match better with the Audio-gd.  I also try the Almarro 318 with the Topping, I don’t feel fatigue.  But I like the Audio-gd + Triode Lab More than Topping + Almarro.  
I think I have two top candidates:

1) MHDT Orchid
this has very good review by reviewer and the community.  People often comment it has a smooth, liquid sound.  
2) Audio-gd R7 or R8
this has rave review in 6moons with a blue moon award.  It is the same brand that I like, and hopefully with similar but improved sound signature.  Also, it is very flexible that I can choose a TDA1541 smoother sound, and NOS vs with over sampling.