Some other notable DACs in your $500-ish price range worth considering:
Gustard X12
HRT Music Streamer III
Some other notable amps to try, also worth around $500:
Gustard H10
Cavalli Liquid Carbon
Otherwise, the Schiit Modi 2 pairs quite well with the Schiit Vali, which is only about a $10 upgrade from the Magni 2.
I second that the Momentums are "really that bad". Bloated artificial bass and super bright treble with a fakey midrange, and these can's don't scale AT ALL, meaning they sound just as bad with cheap or expensive gear. YMMV.
PS- not to backslide or anything but I also have my doubts about Purrin being the Messiah - he was there at CanJam and I don't remember anything supernatural surround him. (LOL)