Lorex is okay. They do have awesome deals. On Black Friday, I ordered two systems, it cake with 12 4K resolution bullet cams for 1500 each shipped, each. The resolution is amazing. Like reading the numbers off passing cars good. Then again I did set mine all the way to the roadway shot up and down the street to pick plates. All have been running since December with only the occasional reboot.
Plan for a lot of data storage if you get in to high res.