I see that you have a similar set up to mine. If you love the ifi pro amp and dac the Fiio m17 fits the soundsignature - lively and punchy.On the fence about getting one of these, my main use would be out and about and am concerned its size would be too much of a challenge. Appreciate feedback from anyone who uses this as their daily commuting DAP.
I also saw that you have the Astell&Kern- I had it as well and I loved it - it is more delicate and airy - but for commuting the best you can get. I wouldn’t use the Fiio M17 for commuting, it’s like a brick.