These sumps originated in a Ford shop....Diesel Innovations was about the first to market with them years ago...hundreds were installed on Ford's there.
BDP is pretty well priced....not to mention they have a new style coming out this week that will be the simplest I've seen to install yet. Of course I have their original style with no complaints.
I will never use a stand pipe again. After installing the bottom sump I can run it down to 1/8 tank if I don't get on it very hard. Could never do that with a stand pipe.