Without knowing your exact setup and your specific needs or wants in a broadhead, I would recomend the thunderheads. I don't think a thunderhead is ever a bad, choice. they are excellent broadheads that work with fast arrows, slow ones, low KE setups or High Energy ones. You will never be "wrong" with a well tuned bow and thunderheads.

TAKE YOUR KIDS HUNTING AND YOU WON'T BE HUNTING FOR YOUR KIDS