Wow! The sound quality is insane, I mean v2 was pretty good but this coupled with a phone that support the Hi-Res output is in a league of it's own, up there alone with Viper4Android. Really impressed by the work you've done.
Now as for the ui it's another story, I liked the old one better. Now though this is most likely is due to both the lack of material design and all of the theming option v2 has (by the way the material theme by ikorolkov really is amazing for the v2) which make this one feel outdated.
Definitely looking forward to future updates and hopefully the return of themes in the near future
Edit: Just saw the next build priorities thread and the fact that a revamped ui is coming next!