My experience:
Carbons w/ 200+gr up front group beautifully.
Wood w/ 145-160gr up front group good.

I like shooting both. But beautifully is better than good.

QuoteOriginally posted by Rick McGowan:
The only reason is, you can't buy them with enough mass weight,  

QuoteOriginally posted by Rick McGowan:
 They are very light and they come in VERY limited spine groups.

I shot aluminums for over 20 years, with a 175 grain head (Zwickey Delta and long adapter)...can't remember how many deer I zipped through with those.  I weighed them for kicks one day, and they weighed 500 grains on the nose.

I now shoot Arrow Dynamic Trad Heavies with the same head,(un-weighted) and they weigh 530 grains.  

Not all carbons are light.