I've dabbed in here several times, read the cliff notes but still overwhelmed with cameras, international model numbers vs. USA part numbers, which NVR to purchase, the 2mp vs 4mp battle, now we have starlight, starlight plus, and lots of AI features, full night color, etc. My main goal is to purchase about 8 cameras that need to work superb in low light, i'm in the country and the only light source would be ambient light provided from my house. I've read numerous threads saying the 1831 is better than the 5831, the 4239 is better than the 5442, i can't make heads or tails of this. I dont want to order the wrong stuff from andy. is there a guide that has the international part numbers and usa part numbers right on the same sheet so i know what i'm looking at? i'm also looking at a mini ptz, there is supposed to be a 1a404 that replaced the 1a203,i also see a 22204ueni that claims it's new, but i see video reviews on youtube from 2-3 years ago. i'll figure out the varifocal, and mm part, but for the most part just looking for turrets for around the house. do i need a smart one to set rules for motion? i want push notifications when there's an actual person on my property, not a skunk just trying to make sense of it all, thanks! Austin TX.