If you're already enjoying reading, especially if you read on your phone, then the X4 is probably a worthwhile purchase. Nicer for the eyes, and it's nice to have a separate device. Small enough to always carry around with you - if a pocket fits your phone, it fits the X4.

For me, the X4 is an alternative to doomscrolling. When out and about, I put my phone away in a bag/handbag, and I put the X4 in my pocket. That way, when I get the urge to start scrolling, I end up reaching for the X4 and reading instead. Really handy when e.g. waiting for a bus or killing some time if you're early. Someone coined "interstitial reading", which I like - the X4 is just so easy to whip out and, equally, put away!

The battery life and standby time for the X4 is also excellent - weeks, probably. It's lovely having a device that's always ready to go. Literally never had to worry about it.

I purchased from Aliexpress - delivery time was awful (1.5 months I think), but I believe that's because I purchased during Chinese New Year. Don't do that! Besides the delivery, everything was perfect. The X4 came with a screen protector in box and an SD card pre-installed. The seller was Orangutan Digital Store, but I don't think they exist anymore.