I got the 720p 500gb 4 camera wireless set. I was worried it would be a pile of crap, but it's actually pretty great, especially for only $130! Image quality is good. Nightvision is good. I feel no need for a 1080 or 4k camera system. These get the job one. The NVR box and cameras are made of metal so it doesn't feel cheap at all. The mobile app works great for remote view. (you have to port forward if you want to allow access from anywhere) You can record clips to your phone while the NVR is continuously recording. (Blink connot) I attached screen shots from my phone. Also I recommend you get some 2.1mm x 5mm extension power cables for the cameras if you have outlets that are more than 2-3 feet away. I got the Camview 5M(16.5ft) cables.
The one gripe I have with it is the giant ethernet input on the cameras that were too big to fit in the holes I drilled to so they're sticking on the outside with the camera. I might have to drill the holes bigger to hide them, which I don't want to do.
Overall I'm glad I went with this instead of the battery powered Blink XT which is $130 just for 1 camera and no local storage, which was a deal breaker for me. I will update this review over time.
I would give this product five stars if it had better instructions. I actually did not know they had devices where you could plug a mouse into them and a keyboard would prompt up so I was lost at first. Then I looked at the page on Amazon advertised this product and saw it had to be plugged in to mouse, etc.. I just plugged everything in to where it goes and presto it worked. Great views of the yard and my shed which has the valuables, the concrete, concrete mixer, lawn mowers, etc.. The instructions skip from plugging it in to entering information and do not cover exactly what plugs to where. I thought at first you had to plug it in to a pc but you don't. Overall I would say this is a great value for such a low price.
The 4 cameras included are amazing quality sturdy full heavy metal real 1.2 mpx beyond 720p they are well worth 35 each with the 60ft cables, i returned it because the cameras are no match for the dvr i tested them with different dvrs, this dvr doesnt syncronise the 4 videos playing and video quality didnt seen to be 720p. Great deal if you need to upgrade or replace cameras!!