I'm using SABRENT Rocket CFX PRO 2TB for both Z9 and Z8. No overheat in either camera even in direct Florida sun at 95F+ and (very) high humidity.
Actually, I'm also using Sabrent drives (NVMe) in all my computers and they never had let me down.
As for Delkin: Power series is a standard run-off-the-mill card, and Black is way overpriced to my taste. Same applies to Prograde (average card for Silver-Gold-Platinum series, and way overpriced Cobalt one).
Don't get me wrong: both Delkin Black and Prograde Cobalt are excellent cards, but they are just overkill and overhype for Z9, especially if you don't do video. If you were using GFX100II it would be a different story...
Just never buy a Sandisk.