AFAIK, the only 4 point system that is DoT approved is from Schroth. They're also the only ones with a 4 point system that can be used in amauture racing groups like NASA and SCCA; although in limited applications.
Anything with a SFI rating is going to be safe in just about any kind of accident. I doubt you'll find one particularly better than another in that respect. I'm using a Simpson 5 point system, that has a central lever type latch. Maybe not as convenient as a central buckle. But a bit cheaper, just as safe, and simpler. Grab the red tab and pull. It will never jam. Once it's visually locked, it will bever come loose. That kind of clasp has been the standard in military aircraft for decades. Sometimes simplicity is a good thing.