This might help Box Guide.
I have a Mecool M8S Pro + (Based on the information in the thread) and I'm impressed with it. About the same price of a RPI3 B+ but with more RAM, and X265 decoding.
The Android version shouldn't matter, but the later the version, the newer the hardware.
No idea - it might, it might not. It will be an experiment as not all USB sticks are bootable (as I have found out the hard way). The box also doesn't have Ethernet, so you'll have to rely totally on Wifi - so if you intend to stream, look for another box.
It's your choice. Either wait for someone with a Mecool M8S PLUS W to answer, or pick a box that is known to work.
A T95m works great, it should also have a better processor, S905X.
There are now OSMC AMLogic Kernel mods now going into my LE 8.2.x releases that output 24bit multichannel LPCM audio.
You can read all the detailed testing, development and discussion over on the Vero 4K forums:
Can Vero do bit-perfect playback? - Vero 4K / Vero 4K + - OSMC Forums
If I am going to boot from a microsd card and run latest stable Libreelec on them, does the brand even matter? And does the version of android matter, if it is 6, 7 or 8?
The Antutu score in the Android TV Box chart from Chigz tech reviews gives a good indication of the speed of RAM and eMMC Flash storage of various AML S9xx boxes that can be used for LE:
https://docs.google.com/spreadsheets/d/1ebg4trtmgaf-zxukg1ycotxoerwrocyd-du2shjuc6o/edit#gid=0
Usually the more up to date Android 7.x Firmware - the better the Bootloader which is also used by LibreELEC.
THANKS !!! Very good info.....I will read about it all later this evening.... good stuff. 
There are now OSMC AMLogic Kernel mods now going into my LE 8.2.x releases that output 24bit multichannel LPCM audio.
So how do we find this LE realease? and is it something that will be ready soon...
I can only find kszaq LE builds from the download section...
Thanks...
Current versions inc. such LPCM audio mods are LE 8.2.5 found in this folder:
tested the : LibreELEC-S905.arm-8.2.5-Chroma.422.10bit.img.gz on my S905X Android box quick now, cant see the bitrate info on my Yamaha receiver but what I saw was it played 96khz 5.1 files, so Im sure the samplerate also is 24 bit.... great...
Cpu load was around 20-40% for a 1080p 24hz to 60 hz videos.....
wrxtasy, is this version the final one regarding PCM 24Bit sound, or only a test version?
I will try it later more when I have time... seems very promising
