We installed 1,200 ah of Dragonfly Energy batteries (sold by Battleborn) in our boat three years ago. We couldn't be happier with them. They have functioned flawlessly for three years, and the primary reason we decided on them was Battleborn's warranty and reputation for customer support.
Having said that, if we were to do it again today, we would have gone with another brand. Today we could install a brand with more features that costs 1/3 the cost of what we installed, and what was available three years ago.
Do we regret our decision? No. There will always be a better, cheaper, more capable SOMETHING available tomorrow . . . . But we've enjoyed the house battery bank we installed, with all the benefits, for almost three years of full time cruising, when we could have been limping along with old technology for those three years.
LiFePO4 batteries are not for everyone, for instance, if you are a marina rat, or only go hook-up to hook-up, you hardly need any battery bank at all, but FOR US, it was the right decision.