Chopper aluminum or plastic? The price difference sobering, but value for money Aluminium wins. -------------------------------------------------------------------------------------------------------------------------------------------------------------------- The first accessory (there are many others) essential for your Kitchenaid robot The meat is ground to perfection and without the heat or the grind as is the case with other models .. You will see what there is in your ground beef, bolognese, hachi parmentier etc ........... Of course vegetables are not a problem for this accessory ... The knives are self sharpening so you'll always have a tool that will cut to perfection. You can spend all the parts in the dishwasher but I advise you not to do it with the sharp parts