[roundel]

There are lots of variables. As mentioned, the thinner shoulder straps are designed to fit nicely over HANS shoulder pieces. There is also the manner that the sub belts attach. I have ones similar to your photo for my passenger seat with the subs attaching to a single buckle into the bottom of the twist lock. My driver's side has the sub belts attach to the lap belts. It is more complicated to buckle up, but there is one less metal piece to be uncomfortable by your junk. I did not get it for the passenger because it would be a pain to teach each passenger how to attach the subs to the lap pieces before buckling them. Other variables include "pull up" vs "pull down" lap adjustment straps. If you get narrower HANS straps, how to they narrow? in the weave or folded? Finally, how flexible or "soft" are the belts? Some are very stiff and less comfy, others are nice and flexible. You may want to try a bunch out at the next event to see what lock you like, what tightening you like, and what brands feel comfy.

FWIW I got Schroth and they are very comfy once they are adjusted and tightened for me despite mine being a bit clumsy to buckle up without practice. They were pricey, but the home CFO was not interested in economizing on safety.