Fibersteel is run by Russ Rodriquez(I may have spelled the last name wrong). They sell predominately Spyder stuff. They also do custom Spyder work such as aluminum interior...
I got drumskins and jack points from them years ago. I haven't heard any bad things about them either, nor of any affiliation with Rusty Tubs.
I haven't done any research on either one, so I could be mistaken.