Hi I bought 4x IPC-HDW5231R-ZE and 1x HFW5231E-Z12E from Andy in 2018, one of the cameras died after my network switch (PoE) went down due to power outage, I would like to replace the dead camera and would like to add 3-4 more, what would you recommend? I am happy with IPC-HDW5231R-ZE in terms of resolution but I am ready to consider even higher resolution and even better night vision option if there is one available at least for couple of cameras, otherwise I will be happy with a cost effective replacement for HDW5231R-ZE.