I concur, on the Chamearops humilis. I've tried two, with minimal winter protection. The silver variety was from an expensive 1 gallon pot and did not make it. The larger (5 gallon) was a cheap HD purchase and is starting its 3rd winter. I mulch it heavily and put a 20-gallon bucket over it for the worst weather. This year I have heat tape as a supplement as it is finally forming a trunk.
So, my advice is to pick up a 15 gallon C. humilis when you are down south and plan to protect it with heat tape, Christmas lights and cover.
I bought a 1 gallon Brahea armata when I bought the silver C. humilis. I still have it in a pot, although by now a larger one. It is growing well, but I bring it indoors each winter. I plan to keep doing that for a few more years until it is really big. I hope to get a Bizzy some day, but it will be a permanent pot specimen here in Oklahoma.

Med fan palms are really tough buggers for sure. I have a pretty nice one that laughed at 24, I might move it to a better location so I can enjoy it more next year.

Bill

Yea wx,Cerifera is a great palm.I have one that took 12(F) no problem,if kept dry,dry.dry.
This brings up one of the difficulties of getting these palms that need to be dry during cold established.
Bismarckia will be a challenge that I don't think is worth the effort at least a Washy can regrow some lost mass during a hot enough summer-
so it may recover from winter damage once or twice.
It can be done(Bizzy) if you don't mind building a G-house over it for winter.
I would love to have a Bizzy in my yard but I'm thinking even Washys will be enough of a pain in the a$$.
Some of the palms being mentioned although cold hardy DO NOT recover in time to fight through another winter.
I think this needs to be the final point to consider when choosing what you want to grow.