As mentioned above, LTE latency really isn't that bad. Just most implementations on top of it usually result in high latency. I think we avoid this pretty good in our project.

Have you published any details about how you accomplished low latency? For example, you stated 150ms further up in this thread, what were the conditions for that test? Was it documented?

As sweet as low latency HD FPV would be, I'm hesitant to spend more money on a "newfangled" digital solution unless I I'm aware of such technical details.

I would suggest to read "The geeky stuff" section on our campaign page, it explains how we achieve low latency. If you want to know specific details I am happy to elaborate.