[Rey_a]

Hi,

I also switched from a HP Slate 21 to a windows device a couple of months ago.

Could not notice any differences between the two versions of MobileSheets. (I have never used the Companion, so I cannot comment on that part)
Switching from one to the other was easy using the backup / Restore function in MS.
Also, the annotations I made in MS when on Android are in exactly the same place after restoring the MS backup to the windows version (I was a bit afraid that there would be some differences there before I made the switch ... )

The differences I did notice are O.S. related.
On Android, MS was started automatically when detecting my MIDI device. On Windows, having MS start automatically is more difficult. There are a couple of posts about this on the MobileSheets forum.
And of course Windows will install it's updates, which can be rather annoying at times.
On the Android device there was no way to access my NAS device (where I keep my MS backups) from within MobileSheets. On Windows this is of course no longer an issue
I can now also use the device where MS is running on for other music related stuff (such as using Musescore for making music scores)
....

Rudy