Would be interesting to hear your take on the difference between the Auralic Aries and the microRendu too. Or is it also not "dramatic"?
It depends on how you're using the Aries.
The Aries via AES/EBU XLR sounds better than both the Aries' USB output and the microRendu (which is, of course, USB-only), if you're feeding an Yggdrasil. The performance improvement is bigger between the AES and USB connections than it is between the Aries in USB mode and the microRendu.
In other words, if you're going to use a USB connection, you're probably better off just going with the microRendu. But if you want the best overall performance, an Aries via AES/EBU XLR is discernibly better.
Still not, in anyway, "dramatic" though.
An interesting note with the microRendu ... if you have more than one of Sonore's products on your network (I have both a SonicOrbiter SE and the microRendu), then you have to turn all but one of them off if you want to configure/change settings on them (including for initial setup) or the web-based config tool loses it's mind.