i have never ever been caught in a kneebar/RNC/heel hook or a triangle in a actual sparrring or ggrappling session. but i do freaking hate the feeelig of being in a guilotine , yrs ago when i first started training JJ i only knew wrestling so i was always getting caugt all the time going for doubles and such , after years i finaly learned how to defend any guilotine from any position ... i havent been caught in almost a year lol! improud of that i hate gettting tapped period!!!
kmiura s hurt alot , armbars not really unless ur stupid and dont tap right away when your caught .
my vote goes to guilotine
PS heeelhooks are the easiest sub to get out of IMO