Since you don't have the newer OS to play with. For me it's important since our office writes apps so we have some going back to about 4.2. I'll forego writing what is on the new OS since that's on the web.
I’m thinking of buying a Sharp Z2, an absolute steal for its price considering how good the specs are. However, it runs on Android 6.0. Is having marshmallow worth it at 2018? How will the UI compare, and am I missing much from the other versions?

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