The Corsair MP600 Mini is a good choice if you want 1TB of fast, efficient storage for your Steam Deck or ROG Ally. It uses TLC and is priced right.
Another contender enters the ring.
Corsair MP600 Mini M.2 SSD - Review 2023 - PCMag Middle East
MP600 MINI 1TB (Gen4) PCIe x4 NVMe M.2 2230 SSD
APC - Issue 521 (Jul 2023) (TruePDF), PDF
Corsair MP600 Mini 1TB M.2 NVMe PCIe x4 Gen4 2 SSD – M
Corsair MP600 Mini 1TB (Gen4) PCIe X4 NVMe M.2 2230 SSD
Corsair MP600 Core Mini SSD Review
Corsair MP600 Mini 1 TB Review - TLC Storage for the Steam Deck
Compact M.2 2230 Form-Factor: Fully compatible with Valve Steam Deck, Microsoft Surface, and other ultra-thin devices, making a great upgrade for
Corsair MP600 Mini 1TB M.2 NVMe PCIe x4 Gen4 2 SSD – M.2 2230 – Up to 4,800MB/sec Sequential Read – High-Density 3D TLC NAND – Great for Steam Deck
Corsair MP600 Mini 1TB Review (Steam Deck)
Corsair MP600 Mini 1TB SSD Review: Corsair's Foray into M.2 2230