[BiggarView]

You make good arguments in favor of AGM over LFP except for one. Weight. Weight can be a real issue in an RV when you have to carry all your other stuff, food, toys clothing etc as well as several hundred lbs of batteries with AGM. One can easily exceed their CCC with a large enough battery bank especially when full timing. LFP on the other hand, are very light for what they deliver so it is an important alternative albeit expensive. As you say it depends on how long you will have the rig but also what you want to do with it.