If you plan to use the VIM2, as a server, I recommend to try the official firmware VIM2_Ubuntu-server-16.04_Linux-4.9_V170922. It includes kernel “4.9.40”.
IMHO many exaggerate the importance of support for the HW in Linux. To work in desktop mode, power 8 cores S912 is enough for 1080p or 4 kernel S905X for 720p. Many people want to have desktop (for example Mate) full screen video playback. But if you enable full-screen video playback, desktop and other programs can no longer be used. This implies that if you enable full-screen video, it really doesn’t matter what program you do it. Full-screen video copes KODI. And for playback in a video window and sound while simultaneously running other programs on the desktop is enough available resources. So for me the optimal system Linux+Libreelec. Want to work and watch videos - use Linux (Mate or another shell). Want to watch full screen video run KODI (or LE) and watch any video in full screen.