Video Comparison of Lens A, B, & D
The vendor has confirmed that Lens C has not proven to be of sufficient quality, so will not be made available. But there are other samples still to be tested. I got the following video samples from him showing a static scene with Lenses A, B, and D, with D being a 120 AOV lens.
I think Lens D is pretty good considering the wide AOV. Color is good, focus is decent across the entire frame, and vignetting is negligible. The fisheye distortion is to be expected with this small inexpensive lens, but should be good for FPV use. Best viewed on the Vimeo site, in full screen with scaling toggled off.