I'm trying to narrow down an NVR, I want the dahua NVR-5208-8P-4KS2E but i'm finding variants without the E, and without the 8P. from what i can tell peeking in the dahua catalog, the 8P means 8 PoE ports and the E i'm assuming means ePoE but i'm not certain. furthermore on andys site it's over $300 for the 8p-4k2 (no E) while the E version straight from dahua is $259, what gives? Andy is out of pocket for almost another week, does anyone own either of these and can chime in? also, there's some version 4.0 firmware for these. also i'm aware these are HDD-less, are the WD Red's still finding their way into NVR's or are the purples still the way to fly? when i searched i found a post from 2016. I'd like a quiet drive since i'll be sitting close to the NVR. just trying to make sure i order all the right gear, thx.