Also quoting James :
"
2, Usually we will make thousands in the first batch , it is not for test cause we will lost lots of money if there are any quality issues which can't accept.
3, The main reason why it is only for sale in China is there are huge different between China and outside China in the firmware, for example, in China no one care about the Googly play and we use different Apps, so it is more easy to us to sell in China first.
"
We also may be, and I think we are, in that case. The product is already fully available in China, so 200 units is very few in my mind
By the ones I know, the M11 will fill your needs, with a really great sound. Of what I think, we are at a price range where the sound quality jump won't be noticeable until 900-1000 dollars, so will be good for a long time with that.
Plus, you may want to take advantage of the balanced 2.5 cable of your F9 pro, big lasting time units (such as Sony's) may not offer this connection. Also, 13 hours of playback is on the top of line when it comes to common powerful DAPs
Also, regarding your OS request, other DAPs as Cowon Plenue D2, have a laggy software. Some people don't care, some people do, but if it is really important for you, FiiO M11 offers one of the best fluidity experience so far.
You may look at Hiby R6, but it is the same price range as FiiO M11 and do not have the same amount of connectivity, minor battery life and a very little laggy scrolling through music collection.
There is also the Hiby R3, offering the 2.5 connector, decent battery life, very cool user experience through OS, but it is not the same range of sound quality.
I let you search through the other dedicated topics to know about the iBasso, A&K and more that I don't know, I hope you will find your dream DAP!