I wouldn't use the PM853 the 3d nand used in the 850 evo and PM863 is superior, the PM863 is worth consideration and generally priced similarly to the 850 evo on ebay however with either one I have to ask about your workload as you'll see a drop off in write performance on TLC drives once the emulated SLC cache is exhausted, in a read heavy workload or with large(1tb+) drives this isn't as catastrophic a decline as they have both large caches and more nand to maintain higher write performance but it is still worth examining compared to a MLC drive especially for servers.