Lensvid compared the three CFexpress Type A cards for your Sony A1. The conclusion:
As we have seen, the performance of all the existing CFexpress Type A cards seems to be pretty much identical in camera although in our test we have seen differences when offloading to a computer. For many users though the real differences are going to be in things like warranty and long-term reliability which is difficult to test without a large enough sample and of course pricing.
All Type A cards can be found on that BHphoto page (click here).
