Got my Aune T1 yesterday, so I will offer my very humble impressions vs. the Fiio E17 and the Schiit Magni & Modi stack.
Fiio E17 - offers the most value but the least performance. Upside is that it is portable and has hardware EQ.
The Schiit Magni and Modi - a touch too bright for my taste, and over resolving with some tracks. Doesn't play well with my indie music. The stack, while sexy looking, is sort of a hassle (I don't think I'm cut out for separate amps/dacs).
The Aune T1 is "just right". I've only had it for a day and I'm loving the stock tube right out of the box! So smooth. When the tube fully warms up, the tracks melt into my ears like butter. I haven't even got into tube rolling but if the sound can get better than what I got right now, then I'd say the Aune is a steal.
So in short, Aune > Schiit Magni and Modi > Fiio E17, in terms of performance
Fiio > Aune > Schiit stack in terms of value.
Very nice. I'm glad that I've ordered T1 too. I think a lot of people would appreciate a longer review/comparison with Modi-Magni stack. Thanks.