I'd stick with name brands. Speed is not going to make a huge difference for recording purposes. 5000MBps or 7000MBps you probably won't notice a difference on recording or playback.
Samsung, Kingston, Crucial, WD should be fine. And if you can find a model withing these brands which has a heatsink or heat spreader, even better, since the unit is not actively cooled. Don't get their cheapest model line.
I personally use a Kingston KC3000 1TB in my unit, which has a low profile heat spreader. Not the cheapest model around, but figured I did not want any hassles. Not that I worry about losing any recording, but it is just something that can be cause other glitches if you use it for TS also.
I originally started with a Samsung 980 Pro 500GB (which worked well also), but since I had the Kingston left over from another project, decided to just swap it in.