If you're looking for a reliable sprocket, the SUPERSPROX is a cool choice. It's lightweight and strong, because they made it out of some specific metal alloy. It fits like a glove on most motorcycles, so you'll have no problem installing it. You install and ride! Even after you've been riding for a long time, you can hardly see any scratches or signs of wear on it. Best of all, it's lightweight, so it doesn't put extra weight on the motorcycle, which is always a plus. If you want something that will work without problems, this sprocket is a hit.
I have always used these sprockets for me aluminum sprockets are pointless, maybe lighter and this is more for pro riders, steel heavier but last longer.