Avoid frustration,shoot all carbons. You'll have a flatter trajectory ,don't have to worry about bent arrows,etc.
Some people like aluminums because they are fatter which helps with clearance problems on your rest, I haven't had any problems with carbons.Carbons are either straight or broken - Aluminums bend,A/C/C are hard to bend, but will. Some new carbons are cheap(my last dz cost $69.00).
Don't be fooled about penetraion , I feel carbons have less drag and penetrate better than aluminums (because generally they are smaller in diameter). I shoot a set up with 75 # of KE and blow through deer with a 352 grain carbon arrow and big expandables (actually too good...they usually go in the ground about 10" -18 " after passing through the deer).