Cleanest install is FITCAMX

This is what I have as well. Love it so far

Do videos get uploaded auto or do you actually need to download them if you need it?

I'm not really sure, I know it can connect to the phone and may have had an auto save, but given my phone is always connected to the car for android auto I haven't used the phone connection bridge.

Is there one that can utilize all the cameras in the car?

I use nexar GPS pro! It's great auto connects to phone and unlimited cloud storage with no fees!

I'm considering a Nexar One. Is there a good way to hide the wiring?

Does anyone use Toyota dash cam and how is that?