Personally I do use aluminum. Only because they're cheap. I can buy 12 arrows for $50.00.. as oppose to my buddy who spends $70.00 for 6 carbon arrows. Use whatever fits your bow that you have some confidence in. For me it just makes sense to save a little on my arrow that still kills deer just as effectively from my bow.

As far as noise... very very little and only at times when climate really changes quickly. But I still have only had 1 deer (deer season 2004) hear me draw with my WB. Unfortunatly for him it was too late.