I say kama, ok nunchau's r good but they don't really do much damage, And a bo? can't really hid that in your pocket and the is way 2 noticable. And then there is a sai witch is practically a VERY heavy knife, but only good for stabbing . But kamas on the other hand have good reach. So you can slice em or chop em. Plus they conceal very well and u can throw them that's my skit of a fight