Food for thought if you've already decided to try something new.
There has been some good research in support of single bevel on a two blade broadhead done by Dr Ed Ashby. I'm not an engineer but as I understand it - they rotate through the animal which helps with bone hits. He's done lots of testing done on real animals (not blocks of gelatin). It's caught on in trad archery, It seems to be less popular with compound shooters. Some might think this advantage is splitting hairs for a compound shooter but I'd rather think of as splitting bone.
http://www.bowhunters.org.au/phpBB3/...Broadheads.pdf
Zwickey makes a 130 gr called no mercy. Eclipse and Grizzly also have single bevels. I'm sure there's more.