check out TristanX's suggestions at the top of this page. more worth it or not, you can compare their respective specs and make your own justifications.

i think transcend mte220s is good. on paper, it's very similar to hp ex950, except for mte220s having higher endurance ratings. again, these are on paper, so it's up to you to decide.

edit:

out of curiosity i checked out mte220s for chipset part numbers for ram/nand/controller. for 1tb model, mte220s uses samsung ddr3, and micron's nand, https://elchapuzasinformatico.com/2019/12/r...s-ssd-m-2-nvme/ (ram part number is K4B4G1646E-BYMA, https://www.samsung.com/semiconductor/dram/...4B4G1646E-BYMA/ )

however, for 2tb model, it has samsung ddr4, and transcend rebranded nand, http://www.vmodtech.com/th/article/transce...review/page/all (ram part number is K4A8G165WC-BCTD, https://www.samsung.com/semiconductor/dram/...4A8G165WC-BCTD/ )

i just post it here for reference. it's no wonder why they didn't put anything about ram cache in their specs.