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M4 Pro 512GB --> 2TB cost: $600

M4 Pro read/write: ~5.4/6.7 GB/s

Samsung 990 Pro 2TB: $170

990 Pro R/W: ~7.1/6.2 GB/s

Samsung 990 Evo 2TB: $130

990 Evo R/W: ~4.8/3.9 GB/s

Sorry no links, looked at tomshardware, Amazon, and macrumors forums for numbers.

Samsung has an 8TB and 4TB model as well. The 8TB is 509 euros in Germany (inc VAT). The 4 TB one is 233 euro.

I have an older 2TB one. USB 3.2. Plenty of speed for putting lots of media, large software packages (e.g. Xplane 12 with a lot of scenery) etc.