I wouldn't bother with a PCIE 5.0 SSD currently (your system also needs to support PCIE 5.0)
These are far too expensive currently in comparison to a high-end PCIE 4.0 SSD and don't offer significant advantages unless your temp file writes are single large-files that are 10s of GB
For random small-file writes there isn't any significant difference
For high-end SSDs with a DRAM cache, the usual suspects are (in no particular order):
Samsung 990 pro
WD SN850X
Crucial T500
Seagate Firecuda 530
SK hynix Platinum P41 / Solidigm SSD P44 PRO
Kingston Fury Renegade
Adata XPG GAMMIX S70 BLADE
I would go with any on the list, whichever is cheapest on the day
