OK, I currently have the original iFi iDAC and I really love the sound. However, I'm wanting to experiment with MQA, which iFi is not releasing the firmware for. Size and price are a bit of an issue, portability is not. My two top contenders are the iFi nano iDSD BL or the Pro-Ject Pre Box s2 Digital.
I know there is quite a price difference between the two, but from what I hear the iFi may just edge out the Pro-Ject and keep quite a few bucks in my pocket.
My sources are my antique Windows laptop and Samsung S9+ and I'll be listening through Fischer Amps FA-3E, Shure SRH 1540s, and Momentum 2s.