Is ME176CX any good?

[Continuum88]

I'm looking for a cheap 7" tablet (primarily email, social media, photos and video) and noticed Asus Memo Pad 7 (model ME176CX). Is it any good, and how does it differ from the model without "X" and from HD7? I was testing HD7 a while ago, but that was at least 2 years ago, so I'm a little wary whether this is an old tablet.

What's the latest version of Android for it, and how is Asus good about updates? (I would like to have the fine-grained permissions for apps, without the need for root.)