I just spent a few days looking for server hard drives. IOPs, NVMe doesn’t RAID, throughput, latency, raid controllers, on hard drive DRAM cache, SAS vs SATA v

I just spent a few days looking for server hard drives. IOPs, NVMe doesn’t RAID, throughput, latency, raid controllers, on hard drive DRAM cache, SAS vs SATA vs M2 vs PCI, drive writes per day, mean time between failure, specific server firmware on drive... I’d buy anything off this list for me personally, but I’m definitely in research mode and there just isn’t enough info here. Buy on price alone!? Savages!