Reliable Sheet metal?

Ive used about everybody patch panels over the years,but now i only buy from autobody specialties.Especially there floor pans.I got a set this christmas for the 73 dart,and they fit perfect!They are thicker than any of the other companies ive bought from,cover much more floor area too,wich i like.They were quite a bit cheaper than everyone else,and any bodies floor pans will rust out,if not properly primed/painted after installation.