I am using these 1TB SSDs from Other World Computing, OWC.
https://eshop.macsales.com/item/OWC/MSU3SSDT1.0/
Here is the complete story. I have been using OWC enclosures with both SSD and spinning drives. The absolute most important thing to know is that I ALWAY use an external power supply/wall wart. I strongly believe that all the problems people have using the SQ to make USB multi-track recordings (USB sticks or external enclosures) is they use bus power from the board. I think that the amount of amps in the SQ just isn’t enough to make certain of a fail-proof recording.
Using external enclosures with external power supplies has meant (literally) zero failed recordings for me. I now use my SQ as my main recorder, abandoning my JoeCo recorder (also fail-proof but a whole ‘nother case to tote around) and using Reaper on a MBP over Dante as my backup.
D.