I would recommend the SSUBX drive. It's an NVMe drive whereas the SSUAX is an AHCI drive. Performance of the SSUBX should be approximately twice that of the SSUAX drive.
Hi pl1984. Yup I'm looking at the SSUBX.
My question though is about having a heatsink or not. The one that comes with the Mac Pro has a heatsink, but some of the SSUBX drives I see don't have a heatsink (like the ones from MBP).
I'm assuming I should get the SSUBX with the heatsink yeah?