I bought the Nokia 8010 TV box instead of the shield. I do not know if it's available in your country. Why? Cheaper and same ish enough.
I like it but "like" is all there is. I do not love it. As most android boxes it is not 100% stable and needs a reboot after a week or so.
I red in several forums the nvidia shield has the same problem.
Tbh the appletv is the wise choice. Stable, more apps, better ecosystem, better soc, more storage. Plex also works on it.
I couldn't use it unfortunately because my Atmos setup is not arc 2.0 and the appletv only does uncompressed atmos. With arc 1.x it's only possible to send atmos compressed over dolby digital plus.