Nice thing about the DDPai hardware kit for around £15 is that is has built in battery voltage protection that you can set in the app. No extra module needed like blackvue and it works well and is dead easy to fit, and comes with 6 fuse taps (2 in each size). The cams also have a built in memory, so no SD card purchase needed. The mini 3 I have is 2K and they now make a Mini 5 which is 4k. They are really small too, nearly invisible if installed up by the headliner.
The only think I think the expensive Korean cams do better is motion activated parking protection. These cheaper Chinese cameras do have 1 sec time lapse of full on recording though, but the impact activation has to be quite hard for it to turn on, and there is no motion sensors. Works fine for popping into the shops withe camera left running, and time lapse would certainly do a full work day recording on the car battery, anything more more and you might consider a Cellinik Neo battery so you can record for a full day, and probably a couple days on timelapse. Again I can't see the expensive cameras offering that much more really.
Good luck with whatever you chose though.