Lux is a tricky one. In my testing it accurate enough to make a determination as to light levels for automatically turning on the lights, however, its not a lux specific meter. What it comes down to is the user case that you are looking to solve. Also this is a multi object tracking motion sensor (which is really cool ! :)) but do you need that functionality? my current top picks are the MSR2 or SNZB06 (which doesn't have lux levels really) or the MTR1 are Aqara FP2 for multi target tracking (which is ALOT more expensive).

Different, MSR2 is a microwave motion sensor, works with single objects. The MTR-1 is a multi object tracker, the MSR2 cannot do that.