I vote male! I too have a male that will get really stripey so for me that isn't a good indicator of gender... I think checking the beard size may be your best bet... I have heard of something called the candle test (or something like that) where you shine a light on the betta in the dark to see if you can locate any ovaries... I'm not sure if it works or not but I guess its worth a try...
GIVING AWAY PLANTS? REAL OR FAKE, I'LL TAKE THEM
3 males: Mardi (OHM) - Mason (HMPKCTEE) - Maddux (HMPK)
1 female: Mercedes (Undecided again) Maybe VT or Delta