I find aluminum easier to tune. Less effect on trimming than carbon.
I shoot both, but for hunting, I go with aluminum. The carbon arrows that most guys shoot just don't have the straightness and consistency of weight and spine found on the XX75. If you can find them in your size, the X7 is fantastic. Same specs as XX75 but a harder alloy that resists bending more than the XX75.
There are some very good carbons but the price is a reflection of their quality control
