Hughes is the big name company that's closest to you, aside from them the possibilities are endless; BTE, FTI, ATI, Transmission Specialties, A1.....

I believe BTE uses its own case design, most of them other brands use a Reid case.

All of them can build good stuff, and you'll probably find someone who has horror stories about each. I recommend picking up the phone, giving them a call and talking it through with them.