I am planning to get an external storage for Ventoy use. My current random usb 3.1 stick writes .iso-files with only 10-15 mbps only. I found this webpage for usb stick speed comparison: https://ssd-tester.de/usb_stick_test.php
The fastest usb sticks writes 800-1000 mbps in the crystaldisk-test.
If you have personal experience on this, please recommend which approach is better.
flash vs ssd is night and day difference for write speeds. if you write that frequently to your ventoy and write speed matters to you, you want ssd.
either make it (assemble) yourself or buy one. i have a number of clients using samsung t7 external usb ssd. they seem pretty fast to me.
i don’t use ventoy or ventoy-like devices that often, i just use flash… even some usb 2.0 ones. yea, they take longer to boot up and longer (much longer) to write to, but i don’t add or replace iso on them very often.
+1 on the T7, mine has been great