[lineslinger]

If you are spooked about some road trash punching up through the floor pan you should tell whatever manufacturer you choose to build/incorporate some form of SS netting/plating into the floor pan, or supply you with something that will CYA to do so during your build.
Your concern is legit, didn't mean to dump on you but I thought your question was worded in a manner as to who has the best frame.
The FFR guys love that one.