Webcams

I've been trying to get the Logitech 920S for some time (even before this COVID business). At the moment, I'm just checking every few days hoping to find one at a reasonable price.
But it the meantime, I'm on the fence on which of these 3 I should buy:

Amcrest AWC195-B
Amcrest AWC205
Ausdom AF640

The 2 Amcrest webcams are virtually the same. Only difference (I notice) is the 4.3mm Lens-90° vs. 3.6mm Lens-70°. How much does this matter?

Plankton said:

That Logitech webcam is expensive and well worth the investment. I would wait till you can afford it as it's far more superior than your listed alternatives.

I'm still going to get the Logitech when it becomes available closer to the original price of $70.00; NOT the $120+ that a lot of places & people are gouging. But in the meantime, I'm hoping to get a webcam mostly for school work, church & family chatting.