Ortlieb vs. Rhinowalk (Waterfly) Waterproof Panniers

I have been looking for affordable panniers for a new off-road touring setup. Here is my unboxing and first impression of the Ortlieb BackRoller 20L and the Rhinowalk (branded Wayerfly) 20+L waterproof read panniers. Expect a follow up in April after we run these through the paces on a 3- day backcountry-ish ride in North Georgia! Feedback is welcome as this is a new endeavor!