I think Red Hot Foods only sells their own stuff. Light My Fire is probably the broadest selection you're going to find.
There used to be a place in Ventura called Smith & Smith, which was similar to Light My Fire, but I'm pretty sure it closed. There also is a place in Long Beach called Hot Licks, but that is even farther from you.
Your best bet might be to order online from a place like More Betta, More Hotta: http://www.mohotta.com It stocks the Mo Hotta sauces, but also has a wide variety of other ones. They also have some sampler packages.
Light My Fire
6333 W 3rd St 230, Los Angeles, CA