Got the Shakes
500+ Head-Fier
In my opinion, the first place money should go to is headphones/IEM's. Looking at the Fidelio, I think an X5 might be good enough — DAC-wise. I have X5 myself and find it quite good with the Sennheiser HD600, although it lacks a little bit in the amp section, but still very decent. Unless you're looking for a (more )portable solution, you could consider an external amp. And since the AK100II wasn't $900-special', I doubt the difference in money between X5 and X7 is going to do a lot for you in terms of sound quality, especially with the Fidelio.
edit:
Also, check this review:
http://www.head-fi.org/products/philips-fidelio-x2/reviews/12247
All this, is of course my opinion.
YMMV
G.
There are some things X7 wise that could make it worth $700 more so than the AK being worth $900. The interchangeable amp modules are something the AK didn't offer for one and if FiiO ends up with the UI of the X7 that is close to as functional as the AK that will be a game changer for a DAP in that price range. Also thanks for the review, it was quite insightful.
Get the X5, it's quite good. Or get a Pono, it is, to me better and just above the X5 price point. The X5 does a few more things than does the Pono, but the Pono plays lossless music beautifully and with more detail than does the X5. Either way, it is 400-500 bucks cheaper than the AK.
I should have mentioned that I had previously had the X5 and really did like it. I sold it to fund my Ak100 II purchase since I thought that would be a superior player (UI wise it was, sound and price wise, not so much IMO). So I know what I'd be getting myself into with that.
I wasn't trying to derail this thread, so sorry if I did. I was just trying to figure out if I should hold off for the X7 since we really don't know final specs and a release date.