These national chains are typically represented by locally owned franchises, and while in my experience they usually do a good job, you have to be aware that if anything goes wrong, you may be dealing with a large, faceless national corporation at some point.
Hopefully your friend has a good relationship with his or her homeowner’s insurance agent. I would suggest asking the agent for a list of names of reputable restoration contractors that the agent can personally recommend to do the work; interview at least two of them; ask for references, check their licenses and so on; and then go from there.
Have a home repair or remodeling question for Paul? He can be reached by email at firstname.lastname@example.org.