This is the only head gear that I found to be bearable for BJJ. My wife said cauli was a deal breaker so I wore this as a white and partially as a blue belt. Now as a purple I don't wear it at all.
http://www.kusakurashop.com/products/judo-headgear
I've heard all kinds of things like it's genetic, it depends on how much you stick your head in - both I think are partially true. Some people develop scar tissue fast and others don't. Some people have that grinding style of BJJ and they seem to get cauli. My style is more finesse based and I rarely stick my head in for no reason - I also wore head gear when I had no style and was a newb.