Yes, I do like tubes when they're done right, no doubt. But I also like good solid state.
I have a different experience with the Magni and Asgard 2. I have both, and I've never preferred the performance of the Magni to the Asgard 2. The A2 has always been significantly more musical to my ears.
Granted, I didn't match volume, but I did use the same sources (line out from FiiO X3, HTC One phone running Neutron Player, USB from computer to Modi, USB from computer to AQ Dragonfly 1.2) and the same range of phones (HE-400, HE-500, HD600, HD598, HD580, Q701, K612, K550, K545, K501, PSB M4U1, DT880, DT770 and a bunch of others). I simply turned the volume to a comfortable listening level, which tends to be more or less the same each time I listen. My preference for the Asgard 2 over the Magni wasn't gleaned from a critical shoot out type listening scenario, but from regular listening with the two amps over many months. I simply think the Asgard 2 has a sound that's of a much higher quality than the Magni.
That's not to say your impressions are not also correct. Folks have very different preferences, and those are right, too. Funny how they can be vastly different from what another may like. But you choose what brings you pleasure, and that's what it's all about.
So I'm just sharing what I'm hearing, and how these amps play out for me. Yes, all those things I described are things I hear. They're also the reasons I like the Vali over the Magni.
Incidentally, if I were to choose one amp out of the 3, my dollar would go to the Asgard 2. I've described the A2 in the past as smooth, controlled, with a hint of warmth. A very composed sound with nothing out of place. Definitely different than the Vali, but pretty great. To my ears, the Magni is the least of these three amps.
Lucky for us, we have some great choices. Three different amps, and chances are one or more will float your boat.
We don't percieve frequencies equally at different volumes, that's why it is essential to match volumes when comparing amps. Look up Fletcher-Munson Loudness Curves, pretty interesting. All in all, I do prefer the Asgard 2 as well, partially on principle of the design being discrete without using negative feedback to control distortion but rather by careful design. Plus it sounds awfully good.