I've taken whitetails with 100 gr. Muzzy's,
Thunderhead's, and Wasp SST's-all quality
broadheads that you can't go wrong with.
Do some research on this for yourself.
Take a look at various BH test results,
the majority of the time you'll see the
same manufacturers coming out on top.
I know 5Shot did some extensive testing
awhile back...try and run a 'search'.

Here are some more BH test results:
http://www.american-hunter.com/broad...dhead_test.htm


Good Luck
TB