Both cards are excellent, but it really depends on how you’re planning to use them.
Samsung Pro Ultimate 256GB = Slightly faster read speed (up to 200 MB/s) and great for smartphones or tablets because of the A2 rating, plus excellent for 4K video recording.
SanDisk Extreme 256GB = Very reliable in action cameras, drones, and outdoor use since it’s known for extra rugged durability, with almost the same write speed (130 MB/s).
👉 If your main use is phones, tablets, or 4K UHD recording, I’d suggest the Samsung Pro Ultimate.
👉 If you’re more into GoPro, drones, or outdoor adventures, then SanDisk Extreme is the better option.
Both are solid choices you just pick based on your usage.
