Price took a nose dive on Amazon AU today? Bargain, I think!
SanDisk 512GB Ultra Fit USB 3.1 Flash Drive - SDCZ430-512G-G46
https://www.amazon.com.au/dp/B083ZS4HYD (US Import)
Free international delivery on Prime to me arrives: 7 - 11 Aug
AUD $106-126~ amazon.com.au Date First Available 13 April 2020
au.camelcamelcamel.com since Jun 16, 2020.
USD $60–$90 amazon.com Date First Available April 8, 2020
camelcamelcamel.com since Apr 13, 2020.
Unfortunate about inferior plastic design of 512GB and 256GB models for dispersing heat; no problems yet though 24/7/365 plugged into TV for playback of standard 1080p at Blu-ray bitrates (so I should think - however, you may need to transcode DTS to AC3 if A/V desync).
SanDisk Ultra Fit USBs have proved more reliable for my data than my last two micro SD card (i.e. non-USB) purchases from leading brands [SanDisk & Samsung; and here in my limited experience, Samsung EVO Select line leads for least file corruption (in binary comparisons) - surely can't be my card readers to fault].
Would something like this be good enough to pop at the back of a Nvidia Shield to playback 4K videos with Plex running as a Server (and client)?