Amazon Basic Micro SD 512 GB. I have just bought it for my Steam Deck because Sandisk cards prices rose and this card was on offer. It has solid writing speed in
Sandisk SanDisk 512GB Ultra microSDXC card + SD adapter up to 150 MB/s with A1 App Performance UHS-I Class 10 U1 | Falcon Computers
SanDisk Ultra 512 GB microSDXC Memory Card + SD Adapter with A1 App Performance Up to 100 MB/s, Class 10, U1, Red/Grey : Amazon.co.uk: Computers & Accessories
Samsung EVO Plus 512GB UHS-1 Micro SD Card Memory Card + SD Adapter on Servers Direct
PRO Plus microSD Card(2021) MB-MD512KA/EU | Samsung UK