Hi 3tons,
Well said!
As a champion of SiO2, I see NOTHING wrong with LiFePo4, except the elephant in the room (for me) of cold weather.
There is also the discharge rate--but any self respecting boondocker is going to have 200 to 400 amp-hours, so that is doesn't existent as a problem, except in the tiniest of Rv's where only one battery might fit. In that singular case, SiO2 would win on discharge rate. The rest of the time, it is a non issue.
I'd still love to have 1000 amp-hour 2 volt cells in series, but that will have to happen in another life time.