Armor All Extreme Shield Max vs.Maquiars Ultimate Liquid wax

I would recommend Collinite Waxes http://www.collinite.com/automotive-wax/

I have been using their #845 Insulator Wax on my MH since 2004 and it still looks like the day it was new. I used this wax since the mid 80's on all of my vehicles with excellent success, durability, and ease of application. Most of my friends with classic cars use it and many of my friends that wax their MH's use it.