So far I think R8 is a solid option in the mid tier range, considering SP2000, Lotoo, LP P6 as upper tier. Max, R8, Fiio M15, SA700, SE200 are in this mid tier price range. There are others, I know.
You are always going to have things you like and don't like about DAPs. I spent so much time obtaining DAPs that were "featureless" and sq focused and now I am looking at the whole package and features. The sq of all of these is great, I am sure. Some are neutral, some are warmer and some are brighter. Some have hiss, some don't. We have so many options, but it will take me some time to see if the R8 will be my backup to the SP2000. Hiby has a great UI, great android execution. The sound has been good thus far.
Fiio was always the budget option then they put out a decent mid tier option in the M15, but it isn't quite there. I have never liked iBasso and their buggy, laggy UI that never gets fixed. I had the Kann Cube which is the largest, size wise, I want to go, so the Max has a couple of strikes against it, size and iBasso UI.
The new Kann Alpha appears to be nice, but time will tell. I love the AK house sound, but it won't appeal to everyone.
Features aside, what's the best DAP you ever experienced in terms of purely sound and as per your own sound preferences?