I have shot aluminum and carbon over the past 10 years and both have good and bad points. The aluminum are straighter, cheaper, and easy to tune. The carbons are not nearly as straight and can be a bit of a tuning issue depending on rest selection. The plus side to carbons are increased arrow speed, better penetration, and more durable. I have never had a problem with a carbon arrow that would make me shoot just aluminum. The real question is for you. If you have something working, why do you want to mess with it? If it ain't broke, don't fix it.