> With low orbit devices I would imagine the latency should be better, I am guessing, but how much better.

Your satellite's 22,000 miles above the earth. If you were directly under it, round trip latency would be 236ms.

If these satellites are 684 miles up, and you were directly under one, round trip latency would be just 7ms.

The distance between satellites, and between the satellites and whatever ground stations actually connect them to the 'net, will all be smaller because of the lower orbits. Latency should be much better.